lecture exam 5 pretest
The process of arousal is under the control of the parasympathetic nervous system. the sympathetic nervous system. both the parasympathetic and sympathetic nervous systems. the central and parasympathetic nervous systems. the central nervous system only.
a
The role of the pituitary hormone LH in males is to stimulate the interstitial cells to produce testosterone. stimulate the sustentacular cells to produce inhibin. initiate sperm production in the testes. develop and maintain secondary sex characteristics. influence sexual behaviors and sex drive.
a
The vagina serves as a passageway for the elimination of menstrual fluids. is homologous to the male scrotum. is normally bacteria-free. forms the upper portion of the birth canal. is lined by an endometrium.
a
The vestibule is a central space surrounded by the labia minora. the inner lining of the uterus. the inferior portion of the uterus. a muscular tube extending between the uterus and the external genitalia. a tube that carries ova from the ovary to the uterus.
a
Triiodothyronine is a hormone secreted by the thyroid gland. pancreas. parathyroid glands. hypothalamus. anterior pituitary.
a
Undifferentiated spermatogenic stem cells are called spermatogonia. spermatids. primary spermatocytes. secondary spermatocytes. sperm.
a
Which of the following are sex hormones that are produced by the adrenal cortex? androgens prostaglandins glucocorticoids mineralocorticoids aldosterones
a
Which of the following hormones bind to membrane receptors and activate G-proteins? peptide hormones steroid hormones prostaglandins thyroid hormones eicosanoids
a
Which of the following hormones enter a cell by diffusion? steroid hormones epinephrine and norepinephrine amino acid derivatives peptide hormones oxytocin
a
Which of the following hormones is secreted by the human pituitary during fetal development in very young children and in pregnant women, but is not usually found in adults? MSH TSH ACTH LH PRL
a
Which of the following hormones is/are produced by both the testes and the ovaries? inhibin estrogens progestins androgens testosterone
a
Which statement regarding growth hormone (GH) is true? GH stimulates the breakdown of stored fats and the release of fatty acids into the blood. Liver cells respond to GH by releasing prostaglandins. Skeletal muscle cells and chondrocytes are extremely insensitive to GH. GH production is regulated by releasing and inhibiting hormones from the thyroid. In epithelial tissues, GH inhibits stem cell division.
a
Which uterine layer consists of a superficial functional zone and a deeper basilar zone? endometrium cervix myometrium internal os perimetrium
a
During female sexual arousal, the ________, which resemble the male bulbo-urethral glands, discharge their secretions near the vaginal entrance. Cowper glands greater vestibular glands lactiferous glands lesser vestibular glands lactiferous sinuses
b
Each testis is wrapped in a dense fibrous capsule called the ________. rete testes tunica albuginea septa ductus deferens dartos muscle
b
Emission occurs under parasympathetic stimulation. begins with peristaltic contractions of the ductus deferens. is responsible for propelling spermatozoa into the female reproductive tract. involves contractions of the cremaster muscle. is associated with orgasm.
b
Generally, the actions of hormones tend to be less widespread than actions of the nervous system. can produce complex changes in physical structure and physiological changes. are faster to react than the nervous system. are shorter-lasting than the actions of the nervous system. do not affect homeostasis.
b
Hormones from the ________, which travel in the hypophyseal portal vessels, alter the activity of the anterior pituitary. brain stem hypothalamus cerebellum thyroid thalamus
b
Hormones produced by the ________ are derived from molecules to which iodine atoms have been attached. thymus thyroid gland pancreas parathyroid glands adrenal glands
b
Hypothalamic signals reach the anterior pituitary through the infundibulum. hypophyseal portal system. hypothalamic axons. hypophysis. thymus.
b
In adult males, the testes secrete ________. estrogens androgens FH and GnRH progesterone LSH and FH
b
In females, engorgement of the erectile tissues of the clitoris is due to ________. parasympathetic inhibition parasympathetic activation central nervous system activation emission ejaculation
b
Marissa has had her thyroid gland removed because of a malignant tumor. She takes synthetic thyroid hormone to replace the thyroxine that her thyroid gland would have produced, but she is worried about her blood calcium. Does she need to worry about this problem? a No, the synthetic thyroid hormone will also control the calcium. b No, as long as she still has functional parathyroid glands she will maintain proper levels of calcium. c No, hormones from the liver and kidneys will regulate calcium through the intestinal tract. d Yes, without the calcitonin, high blood levels of calcium will cause convulsions. e Yes, without the calcitonin she may suffer heart failure.
b
One adrenal hormone that affects glucose metabolism is thymosin. cortisol. aldosterone. epinephrine. gonadotropin.
b
Seminalplasmin, an antibiotic that may help prevent urinary tract infections in males, is present in fluid secretions from the ________. seminal gland prostate gland bulbo-urethral glands ductus deferens seminiferous tubules
b
Sperm production occurs in the ductus deferens. seminiferous tubules. epididymis. seminal vesicles. rete testis.
b
Steroid hormones are proteins. are structurally similar to cholesterol. are the largest class of hormones. include pancreatic hormones. are secreted by the hypothalamus and pituitary gland.
b
The alpha cells of the pancreas produce insulin. glucagon. rennin. ADH. parathyroid hormone.
b
The chief cells of the parathyroid glands produce a hormone that stimulates the formation of white blood cells. increases the level of calcium ions in body fluids. increases the level of sodium ions in body fluids. increases the level of potassium ions in body fluids. decreases the level of calcium ions in body fluids
b
The female structure that is derived from the same embryonic structures as the penis in males is the vagina. clitoris. vestibule. labia minora. labia majora.
b
The fluids contributed by the seminiferous tubules and epididymis account for about how much of the volume of semen? 75% 5% 50% 10% 25%
b
The hormone oxytocin reduces uterine contractions. is involved in the milk "letdown" reflex. regulates blood pressure. governs the ovarian cycle. stimulates melanocytes in the skin
b
The largest division of the uterus is the ________. vagina body isthmus cervix internal os
b
The pituitary hormone that controls the release of glucocorticoids is TSH. ACTH. FSH. LH. MSH.
b
The primary organ(s) of the male reproductive system is(are) the ________. prostate testes bulbo-urethral glands epididymis glans
b
The process of emission is under the control of the parasympathetic nervous system. the sympathetic nervous system. both the parasympathetic and sympathetic nervous systems. the central nervous system. the central and parasympathetic nervous systems.
b
The shallow recess surrounding the cervical protrusion is known as the isthmus. fornix. fundus. body. os.
b
This condition develops when the posterior pituitary no longer releases adequate amounts of ADH. diabetes mellitus diabetes insipidus pituitary dwarfism exophthalmos gigantism
b
To become active, motile, and fully functional, sperm cells must undergo the process of ________. emission capacitation mitosis meiosis I fertilization
b
Two hormones referred to as gonadotropins are GH and TSH. FSH and LH. ADH and ACTH. PRL and OT. ADH and OT.
b
When blood glucose levels fall, insulin is released. glucagon is released. peripheral cells take up less glucose. protein synthesis decreases. fat cells increase their rates of triglyceride synthesis.
b
Which of the following begins at ovulation and persists as long as the corpus luteum remains intact? menarche secretory phase functional phase menstruation proliferative phase
b
Which of the following could cause ineffective synthesis of calcitriol? increased levels of thymosins decreased availability of vitamin D3 increased levels of MSH increased levels of gonadotropins inability to produce sufficient amounts of erythropoietin
b
Which of the following hormones is an amino acid derivative? ADH melatonin oxytocin growth hormone prolactin
b
Which of the following primarily targets the gonads (ovaries and testes)? growth hormone follicle-stimulating hormone prolactin insulin thyroxine
b
________ is characterized by failure of the testes to descend into the scrotum by the time of birth. Impotence Cryptorchidism Sterility Incontinence Erectile dysfunction
b
When a protein or peptide hormone binds to receptors on the surface of a cell, the hormone receptor complex moves into the cytoplasm. the plasma membrane becomes depolarized. a second messenger appears in the cytoplasm. the cell becomes inactive. the hormone is transported to the nucleus, where it alters the activity of the DNA.
c
Where are the hormones secreted by the posterior pituitary made? thyroid anterior pituitary hypothalamus posterior pituitary suprarenal gland
c
Which of the following is the pancreatic hormone that is released when blood glucose levels rise? growth hormone cortisol insulin glucagon erythropoietin
c
All hormones are steroids. cholesterol based. proteins. inorganic compounds. chemical messengers.
e
Another name for antidiuretic hormone is cortisol. parathyroid hormone. thymosin. growth hormone. vasopressin.
e
As in males, ________ from the hypothalamus regulates reproductive function in females; however, its levels change throughout the ovarian cycle. LH estrogen FSH progesterone GnRH
e
Capacitation is stimulated by a substance secreted by the epididymis. immobilizes sperm. is responsible for the physical maturation of sperm. occurs only within the male reproductive tract. occurs after spermatozoa mix with secretions of the seminal glands.
e
Hypothalamic hormones that stimulate the synthesis and secretion of one or more hormones in the anterior lobe are called permissive hormones. synergistic hormones. regulating hormones. stimulating hormones. releasing hormones.
e
In the simplest case, endocrine activity may be controlled by changes in the extracellular fluid composition called ________ stimuli. hormonal cellular neural membrane humoral
e
Male ejaculation occurs as powerful, rhythmic contractions appear in which of the following muscles? erector spinae and ischiocavernosus bulbospongiosus and internal oblique internal oblique and erector spinae ischiocavernosus and internal oblique ischiocavernosus and bulbospongiosus
e
Maturing spermatozoa are stored primarily in the seminiferous tubules. straight tubules. lobules. interstitial areas. epididymis.
e
Menopause is accompanied by a decline in ________. GnRH and estrogen progesterone and FSH FSH and LH LH and progesterone estrogen and progesterone
e
One hormone that is released from the adrenal medulla is insulin. aldosterone. cortisol. androgen. epinephrine.
e
Oogenesis begins by age 5. at puberty. by age 10. at birth. during embryonic development.
e
Pelvic inflammatory disease cannot be caused by sexually transmitted pathogens. does not result in fever. can cause virility. can possibly lead to otitis. may result from invasion of the region by bacteria normally found within the vagina.
e
Preparation of the uterus for implantation results from stimulation by growth hormone. thyroid hormone. testosterone. mineralocorticoids. progesterone.
e
The ejaculatory duct in males is produced by the junction of the ductus deferens with the ________. seminiferous tubules prostate gland duct epididymis acrosomal cap seminal gland duct
e
The endocrine system releases neurotransmitters into the bloodstream for distribution throughout the body. is regulated mainly by positive feedback. produces effects that last for seconds or minutes. is not involved in homeostasis. relies on the release of chemicals that bind to target cells.
e
The female gonad is called a(n) ________. vestibule fallopian tube vagina clitoris ovary
e
The first uterine cycle occurs with the ________. menopause oogenesis climacteric perimenopause menarche
e
The hormone secreted by the pancreatic alpha cells would result in ________. decreased breakdown of glycogen to glucose in the liver and skeletal muscles increased triglyceride synthesis in adipose tissues increased rate of glucose utilization increased rate of ATP generation increased synthesis and release of glucose by the liver
e
The hormone that dominates during the Alarm Phase of the General Adaptation Syndrome (GAS) is testosterone. aldosterone. cortisol. thyroid hormone. epinephrine.
e
The most important androgen is ________. progesterone GnRH estrogen prostaglandin testosterone
e
The pituitary hormone that stimulates the breakdown of stored fats and the release of fatty acids into the bloods is TSH. ACTH. MSH. LH. GH.
e
The proliferative phase of the uterine cycle continues until rising ________ levels mark the arrival of the secretory phase. GnRH FSH LH estrogen progesterone
e
The reddish brown skin that surrounds the nipple is called the vestibule. fornix. zona pellucida. hymen. areola.
e
The small, paired glands at the base of the penis that produce a lubricating secretion are the seminal vesicles. prostate glands. preputial glands. Bartholin's glands. bulbourethral glands.
e
The subsidence, known as detumescence in the male, is mediated by the ________. central nervous system central and sympathetic nervous systems parasympathetic nervous system central and parasympathetic nervous systems sympathetic nervous system
e
The zone of the adrenal cortex closest to the capsule is the zona reticularis. follicular zone. zona fasciculata. interstitial zone. zona glomerulosa.
e
Thyroid hormone insufficiency in infancy results in which of the following? Addison's disease goiter Cushing disease acromegaly cretinism
e
Unless fertilization occurs, the corpus luteum becomes scar tissue, which is known as the ________. follicular wall myometrium zona pellucida corona radiata corpus albicans
e
Which anterior pituitary lobe hormone targets the interstitial cells of the testes? FSH testosterone progesterone GnRH LH
e
Which hormone(s) play(s) a key role in the development and maintenance of normal immune defenses? gonadotropins estrogens androgens leptin thymosins
e
Which of the following is(are) described as an adipose-containing, fleshy structure that encircles and partially conceals external genital structures? mons pubis vestibule clitoris labia minora labia majora
e
Which statement is true regarding steroid hormones? They are carbohydrates. They cannot diffuse through the plasma membrane. They do not bind to receptors in the cytoplasm or nucleus. They cannot change the nature or number of enzymes in the cytoplasm. They can alter the rate of mRNA transcription.
e
As secondary follicles develop, FSH levels decline due to the negative feedback effects of which hormone? LH progesterone GnRH inhibin estrogen
d
Cyclic AMP often causes activation of calcium ion channels. myosin kinase. phosphodiesterase. kinase enzymes. steroids.
d
During the luteal phase of the ovarian cycle, LH levels remain elevated for ________, long enough to stimulate the formation of a functional corpus luteum. 5 days 24 hours 7 days 2 days 6 hours
d
Female orgasm is accompanied by peristaltic contractions of the uterine and vaginal walls and by rhythmic contractions of which of the following muscles? internal oblique and erector spinae ischiocavernosus and internal oblique erector spinae and ischiocavernosus ischiocavernosus and bulbospongiosus bulbospongiosus and internal oblique
d
Hormone-producing cells of the testes produce estrogen. progesterone. leptin. testosterone. renin.
d
Hormones from which of the following glands are responsible for the calorigenic effect? pituitary gland suprarenal gland parathyroid gland thyroid gland thymus
d
In the mammary glands, 15 to 30 of these expanded chambers open onto the surface of each nipple. lobes lobules lactiferous ducts lactiferous sinuses suspensory ligaments
d
Increased sodium ion concentrations in the body can be caused by which adrenal hormone? cortisol erythropoietin thymosin aldosterone renin
d
Interstitial cells produce sperm. FSH. nutrients. testosterone. androgen-inhibiting protein.
d
Just prior to menses, ovulation occurs. a new uterine lining is formed. secretory glands and blood vessels develop in the endometrium. estrogen and progesterone levels drop. the corpus luteum is formed.
d
Normal production of hormones from which gland establishes the background notes of cellular metabolism? pineal pancreas thymus thyroid parathyroid
d
Regarding hormones and body temperature, which statement is true? a Body temperature does not fluctuate during the monthly hormonal fluctuations. b During the luteal phase, when estrogen is the dominant hormone, the resting body temperature is 0.3C lower than it is during the follicular phase. c During the follicular phase, when estrogen is the dominant hormone, the resting body temperature is 0.5C higher than it is during the luteal phase. d During the follicular phase, when estrogen is the dominant hormone, the resting body temperature is 0.3C lower than it is during the luteal phase. e During the luteal phase, when progesterone is the dominant hormone, the resting body temperature is 0.8C higher than it is during the follicular phase.
d
Steroid hormones bind to receptors on the surface of the cell. function by way of a second messenger system. cannot diffuse through the plasma membrane. bind to intracellular receptors. function by activating cAMP.
d
The ________ are finger-like projections at the end of the uterine tube. internal os isthmus infundibulum fimbriae uterine glands
d
The anterior enlargement of erectile tissue in females is known as the fornix. vestibule. hymen. clitoris. isthmus.
d
The anterior surface of the flaccid (nonerect) penis covers two cylindrical columns of erectile tissues called (the) glans penis. prepuce. corpus spongiosum. corpora cavernosa. penile urethra.
d
The average length of the uterine (menstrual) cycle is ________ days. 5 14 20 28 37
d
The following is a list of structures of the male reproductive tract.1 - ductus deferens2 - urethra3 - ejaculatory duct4 - epididymisThe correct order in which spermatozoa pass through these structures from the testes to the penis is 1, 3, 4, 2. 4, 3, 1, 2. 4, 1, 2, 3. 4, 1, 3, 2. 1, 4, 3, 2.
d
The highest level of endocrine control is provided by the thyroid gland. pancreas. suprarenal glands. hypothalamus. thymus.
d
The hormone that inhibits osteoblasts is insulin. glucagon. growth hormone. parathyroid hormone. thyroid hormone.
d
The inner lining of the uterus is called the ________. myometrium internal os perimetrium endometrium cervix
d
The organ that provides mechanical protection and nutritional support for the developing embryo is the vagina. uterine tube. ovary. uterus. cervix.
d
The outer zone of the adrenal cortex produces androgens. glucocorticoids. epinephrine. mineralocorticoids. steroids.
d
The ovary does not release a mature gamete. Instead, a ________ is released. oocyte oogonia primary oocyte secondary oocyte zygote
d
The physical maturation of sperm is called ________. meiosis I oogenesis spermatogonia mitosis spermiogenesis tetrad formation
d
The pituitary hormone that promotes testosterone release in males and ovulation in females is TSH. ACTH. FSH. LH. GH.
d
The posterior pituitary gland secretes follicle-stimulating hormone (FSH). thyroid-stimulating hormone (TSH). adrenocorticotropic hormone (ACTH). oxytocin (OT). melanocyte-stimulating hormone (MSH).
d
The release of parathyroid hormone is controlled by thyroid hormone. TSH. the hypothalamus. blood calcium ion levels. cellular oxygen consumption.
d
The time in which ovulation and menstruation cease is called ________. oogenesis menarche andropause menopause climacteric
d
The tubular gland that produces a secretion that contains fructose, is slightly alkaline, and contributes about 60 percent to the volume of the semen is the prostate gland. bulbourethral gland. corpus cavernosum. seminal vesicle. preputial gland.
d
Thyroid hormones are derived from the amino acid lysine. leucine. glycine. tyrosine. thyronine.
d
What is the function of the gonads? secrete fluids into the reproductive system ducts or other excretory ducts connect the uterus with the exterior receive and transport the gametes produce the gametes and hormones enclose and support a developing embryo
d
Which endocrine gland stores its hormone in follicle cavities? anterior pituitary pancreas thymus thyroid posterior pituitary
d
Which hormone's secretion promotes the loss of sodium ions and water by the kidneys and inhibits renin release? erythropoietin aldosterone thymosin atrial natriuretic peptide glucagon
d
Which of the following hormones requires a releasing hormone from the hypothalamus in order to be released? oxytocin renin ADH FSH calcitonin
d
Which of the following is released by the posterior pituitary? adrenocorticotropic hormone (ACTH) thyroid-stimulating hormone (TSH) growth hormone (GH) antidiuretic hormone (ADH) melanocyte-stimulating hormone (MSH)
d
Cessation of the normal adult menstrual cycle for six months or more is termed dysfunction. amenorrhea. menarche. puberty. dysmenorrhea.
b
The tubular structure of the uterus that projects a short distance into the vagina is called the urethra. ejaculatory duct. cervix. perimetrium. isthmus.
c
The secretion of the seminal vesicles contains ________, which forms a temporary semen clot within the vagina after ejaculation. fructose prostaglandin fibrinogen seminalplasmin urine
c
The pituitary hormone that stimulates spermatogenesis is FSH. LH. ACTH. ADH. GH.
a
"Hot flashes" in menopause typically begin while levels of ________ are declining. estrogen GnRH LH FSH progesterone
a
Aldosterone is the principal ________. mineralocorticoid thyroid hormone glucocorticoid pancreatic hormone androgen
a
An important second messenger in hormonal action is cAMP. calcitriol. insulin. calcium. glucagon.
a
Both centrioles of the spermatid are found in the ________. neck head tail middle piece acrosome
a
Choose the correct statement regarding semen. a The fluid component of semen is a mixture of glandular secretions with a distinct ionic and nutrient composition. b Seminal fluid contains a prostatic enzyme, which functions in liquefying clotted semen. c Of the total volume of seminal fluid, the prostate contributes about 60 percent. d Seminal fluid contains an abundant amount of a waxy material called smegma. A normal sperm count ranges from 5 million to 15 million spermatozoa per milliliter of semen.
a
Contraction of the cremaster muscle occurs when the testes are suddenly exposed to a cold environment. produces an erection. propels sperm through the urethra. moves sperm through the ductus deferens. moves the testes closer to the body cavity.
a
During the Resistance Phase of the General Adaptation Syndrome, which hormones are responsible for maintaining blood volume and the conservation of salts and water? mineralocorticoids (with ADH) epinephrine and norepinephrine glucocorticoids growth hormone (with PRL) glucagon (with ADH)
a
Hypersecretion of glucocorticoids causes Cushing disease. cretinism. acromegaly. goiter. Addison's disease.
a
Identify the notable risk factor associated with breast cancer. family history of breast cancer poor diet pregnancy before age 21 late menarche early menopause
a
Menstruation is the process of shedding of tissue until the entire functional zone has been lost. cannot occur if uterine inflammation exists. usually lasts eight to eleven days. usually results in the loss of 500 - 750 ml of blood. cannot continue if myometrial contractions occur.
a
Parasympathetic innervation of the penile arteries involves neurons that release ________ at their synaptic terminals. nitric oxide dopamine serotonin acetylcholine norepinephrine
a
Peptide hormones are composed of chains of amino acids. released by the reproductive organs. derived from arachidonic acid. lipids. chemically related to cholesterol.
a
Spermatogenesis begins at puberty. during embryogenesis. at birth. at age 3. at age 7.
a
The hormone responsible for initiating a male's sexual maturation and the appearance of secondary sex characteristics is testosterone. ICSH. FSH. LH. gonadotropin.
a
The hormone responsible for the development and maintenance of female secondary sexual characteristics is estrogen. progesterone. LH. FSH. gonadotropin.
a
The hormone that causes the activation of osteoclasts is parathyroid hormone. thyroid hormone. calcitonin. glucagon. oxytocin.
a
The hypothalamus transports hormones to the posterior pituitary by way of neural axons, directly. direct mechanical control. releasing and inhibiting hormones. altering ion concentrations in the anterior pituitary. gap junctions.
a
The increase in FSH that occurs by day 5 of the ovarian cycle triggers formation of a tertiary follicle. menstruation. ovulation. menopause. pregnancy.
a
The interstitial cells of the testes secrete which reproductive hormone(s)? androgens FSH estrogens GnRH progestins
a
The nervous system is ideal for crisis management. communicates by the release of hormones. has effects that are very long-lived. is regulated mainly by positive feedback. does not rely on the binding of receptors to target cells.
a
A massive release, or surge, of ________ from the anterior lobe of the pituitary gland triggers ovulation. gonadotropin FSH LH estrogen progesterone
c
Cells of the adrenal cortex produce epinephrine. ADH. corticosteroids. parathyroid hormone. insulin.
c
Diabetes insipidus is caused by decreased levels of insulin. decreased numbers of insulin receptors. failure of the kidneys to respond to ADH. increased numbers of ADH receptors. increased levels of ADH.
c
During the secretory phase of the uterine (menstrual) cycle, ovulation occurs. a new functional layer is formed in the vagina. uterine glands enlarge. the old functional layer of the endometrium is sloughed off. the corpus albicans releases hormones.
c
Excessive urine production, which is a characteristic symptom of all forms of diabetes, is known as polyphagia. polydipsia. polyuria. polymyositis. diabetes mellitus.
c
Hormone concentration levels are most commonly controlled by positive feedback. the quantity of circulating hormone. negative feedback. cellular demands. body temperature.
c
In females, mammary glands are specialized organs of the ________ system that are controlled by hormones of the reproductive system. endocrine nervous integumentary muscular skeletal
c
Increased levels of the hormone ________ will lead to decreased levels of calcium ions in the blood. thymosin parathyroid hormone calcitonin aldosterone cortisol
c
Insulin causes decreased rate of glucose transport into target cells. decreased amino acid absorption. conversion of glucose to glycogen in the liver and skeletal muscles. increased breakdown of fats to fatty acids in adipose tissue. increased blood glucose levels.
c
Marissa is an avid marathon runner, and she trains incessantly. She has slimmed down so that she is now underweight for her height and has very little fat tissue. One would expect Marissa to have heavy menstrual flows. ovulate continuously. be amenorrheic (have no monthly menstrual flow). have painful menstrual cramps. show elevated levels of FSH.
c
Melatonin is the hormone produced by the ________. anterior pituitary thyroid pineal gland thymus posterior pituitary
c
Peripheral structures sensitive to the presence of hormones are called ________. exocrine cells first messengers target cells second messengers G-proteins
c
Slender, tightly coiled tubules originate at the seminiferous tubules and form a maze of passageways called the: epididymis. ductus deferens. rete testis. efferent ducts. ejaculatory ducts.
c
Spermatozoa are moved along the ductus deferens by hydrostatic force. ciliary action. peristaltic contractions. suction. guide cells.
c
Target cells of hypothalamic releasing and inhibiting hormones are located in the thymus gland. suprarenal gland. anterior pituitary. posterior pituitary. testes.
c
The ________ is a layer of follicle cells that surrounds the oocyte on day 14 of a 28-day cycle. antrum zona pellucida corona radiata corpus albicans isthmus
c
The fact that epinephrine has no apparent effect on energy consumption unless thyroid hormones are present in normal concentrations is an example of a(n) antagonistic effect. synergistic effect. permissive effect. opposing effect. integrative effect.
c
The hormone leptin is secreted by (the) ________. pancreas kidneys adipose tissue hypothalamus anterior pituitary
c
The hormone that is released by the kidneys in response to low oxygen levels in kidney tissues is angiotensin. cortisol. erythropoietin. renin. epinephrine.
c
The hormones that dominate during the Resistance Phase of the General Adaptation Syndrome (GAS) are the mineralocorticoids. androgens. glucocorticoids. thyroid hormones. gonadotropins.
c
The most commonly prescribed oral contraceptives use small amounts of estrogen, or only synthetic androgens. gonadotropins. progesterone. FSH and LH. LH.
c
The muscle in the wall of the scrotum is the cremaster muscle. myometrium. dartos muscle. detrusor muscle. external os.
c
The phase of the uterine cycle that begins in the days following the completion of menses as the surviving epithelial cells multiply and spread across the surface of the endometrium is the ________ phase. pre-ovulatory secretory proliferative puerperal meiosis
c
The portion of erectile tissue that surrounds the urethra is the prepuce. glans. corpus spongiosum. corpora cavernosa. corona radiata.
c
The principal hormone secreted by the corpus luteum, which prepares the uterus for pregnancy, is LH. FSH. progesterone. estradiol. estrogen.
c
