A & P 2: chapter 27

Which of the following is FALSE regarding the vagina of an adult female? 1)The mucosa of the vagina is stratified squamous epithelium. 2)The vagina is also called the birth canal. 3)The vaginal mucosa lacks glands. 4)The pH of the adult vagina is alkaline.

The pH of the adult vagina is alkaline.

The duct system of the male reproductive system does not include the _______ 1)corpus spongiosum 2)urethra 3)ductus deferens 4)epididymis

corpus spongiosum

Which cells produce androgens such as testosterone? 1)myoid cells 2)interstitial endocrine (Leydig) cells 3)sustentocytes (Sertoli cells) 4)spermatogenic cells

interstitial endocrine (Leydig) cells

The cells that produce testosterone in the testis are called __ 1)spermatogonia 2)sustenocytes 3)spermatocytes 4)interstitial endocrine cells

interstitial endocrine cells

Which of the following occurs during spermiogenesis? 1)spermatids are produced 2)spermatogonia are produced 3)sperm are produced 4)sustentacular cells are produced

sperm are produced

Which layer of the uterus is the site for implantation of a fertilized egg? 1)stratum basalis of the endometrium 2)stratum functionalis of the endometrium 3)myometrium

stratum functionalis of the endometrium

Which specific layer of the uterus is shed during menstruation, approximately every 28 days? 1)stratum functionalis of the endometrium 2)myometrium 3)stratum basalis of the endometrium 4)mesometrium

stratum functionalis of the endometrium

Which of the following is the site where sperm are stored until they are ejaculated? 1)tail of the epididymis 2)body of the epididymis 3)rete testis 4)seminiferous tubule

tail of the epididymis

Which of the following is housed within the spermatic cord? 1)rete testis 2)testicular arteries and veins 3)seminiferous tubules 4)epididymis

testicular arteries and veins

During the secretory phase of the uterine cycle _________ 1)the endometrium is shed 2)the endometrium prepares for implantation 3)the functional layer of the endometrium regenerates 4)ovulation occurs

the endometrium prepares for implantation

Which of the following glands are responsible for about 70% of the volume of semen? 1)the prostate 2)the pituitary 3)the bulbo-urethral glands 4)the seminal glands

the seminal glands

The number of chromosomes in a human gamete is __________; this is referred to as the __________ chromosome number. 1)46; diploid 2)23; diploid 3)23; haploid 4)46; haploid

23; haploid

All of the following statements referring to the uterine cycle are true except ________. 1)estrogen is secreted by the developing follicle in the follicular phase of the cycle 2)FSH and LH directly promote development of the uterine endometrium 3)the corpus luteum is formed from the ruptured follicle after ovulation 4)a decrease in the levels of ovarian hormones signals menstruation

FSH and LH directly promote development of the uterine endometrium

Select the correct statement about the uterine cycle. 1)The menstrual phase of the cycle is normally from day 1 to day 8. 2)If fertilization occurs, the corpus luteum is maintained by a hormone secreted by the developing embryo. 3)During the proliferative phase, levels of progesterone rise as the follicle begins to produce more hormone.

If fertilization occurs, the corpus luteum is maintained by a hormone secreted by the developing embryo.

Why are the male testes located in the scrotum outside the body? 1)The testes develop better outside the body. 2)Their external location is necessary for penile development. 3)Immature sperm are temperature sensitive. 4)It helps the male secondary sexual characteristics develop

Immature sperm are temperature sensitive.

Why does meiosis involve two nuclear divisions rather than one, as in mitosis?

Meiosis reduces the chromosome number by half.

Which structure of the female's external genitalia has erectile tissue like the penis? 1)clitoris 2)mons pubis 3)labia majora 4)vulva

clitoris

Why doesn't semen enter the urinary bladder during ejaculation? 1)The smooth muscle sphincter at the base of the urinary bladder closes. 2)There is no urge to urinate during sexual intercourse because of the suppression of LH by testosterone buildup in the blood. 3)Ejaculation is a parasympathetic reflex resulting in no response by urinary contraction muscles. 4)There is no common duct between the reproductive system and the urinary system.

The smooth muscle sphincter at the base of the urinary bladder closes.

The dartos and cremaster muscles are important to the integrity of the male reproductive system. Which of the following is true about the role they play? 1)They contract to push sperm along the ductus deferens. 2)They regulate the temperature of the testes. 3)They contract to allow ejaculation. 4)They are responsible for penile erection.

They regulate the temperature of the testes.

Normally menstruation occurs when ________. 1)blood levels of FSH fall off 2)blood levels of estrogen and progesterone increase 3)the corpus luteum secretes estrogen 4)blood levels of estrogen and progesterone decrease

blood levels of estrogen and progesterone decrease

Erection of the penis results from ________ 1) a parasympathetic reflex 2)dilation of the veins in the penis 3)a sympathetic reflex 4)parasympathetic activation of the bulbo-urethral glands

a parasympathetic reflex

Enzymes that allow sperm to penetrate the egg are located in the __________ of the sperm cell. 1)tail 2)acrosome 3)midpiece 4)mitochondria

acrosome

What part of the breast produces milk? 1)lactiferous ducts 2)areola 3)lactiferous sinus 4)alveoli

alveoli

Which of the following conditions might contribute to an increased probability of having an ectopic pregnancy? 1)reduced blood flow to the ovaries 2)decreased number of cilia in the uterine tubes 3)reduced number of granulosa cells 4)decreased rate of formation of vesicular follicles

decreased number of cilia in the uterine tubes

Sperm are stored in the ____ 1)ductus deferens 2)seminiferous tubules 3)ejaculatory duct 4)epididymis

epididymis

t or f: A human egg or sperm contains 23 pairs of chromosomes.

false

The basic difference between spermatogenesis and oogenesis is that ______ 1)the mature ovum is n, while the sperm is 2n 2)in oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced from the parent cell

in oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced from the parent cell

A surge in __________ directly triggers ovulation. 1)progesterone 2)estrogen 3)luteinizing hormone (LH) 4)follicle-stimulating hormone (FSH)

luteinizing hormone (LH)

This is the muscular layer of the uterus 1)endometrium 2)myometrium 3)serosa

myometrium

Which layer of the uterine wall is made of smooth muscle? 1)myometrium 2)endometrium 3)perimetrium 4)mesometrium

myometrium

How many functional gametes are produced by oogenesis? 1)one functional gamete 2)two functional gametes 3)three functional gametes

one functional gamete

The primary function of the uterus is to ___ 1)regulate the ovarian and menstrual cycles 2)synthesize female hormones 3)protect the ovaries 4)receive, retain, and nourish a fertilized ovum

receive, retain, and nourish a fertilized ovum

The testes reside in the _____ 1)scrotum 2)epididymis 3)deferens 4)ampulla

scrotum

Which of the following cells is released during ovulation? 1)primary oocyte 2)secondary oocyte 3)oogonium 4)ovum

secondary oocyte

Which of the following is the haploid cell produced as a result of meiosis I? 1)type A daughter cell 2)spermatogonium 3)primary spermatocyte 4)secondary spermatocyte

secondary spermatocyte

Sperm are produced in the ____ 1)interstitial tubules 2)spermatic network 3)epididymis 4)seminiferous tubules

seminiferous tubules

Sperm is produced in the __________ of the testes. 1)tunica albuginea 2)tunica vaginalis 3)myoid cells 4)seminiferous tubules

seminiferous tubules

In sequential order, the pathway from sperm production to the external environment is from ____ 1)seminiferous tubules to epididymis to ductus deferens to urethra 2)seminiferous tubules to ductus deferens to epididymis to urethra 3)urethra to ductus deferens to seminiferous tubules to epididymis 4)epididymis to seminiferous tubules to ductus deferens to urethra

seminiferous tubules to epididymis to ductus deferens to urethra

What is the function of the blood testis barrier? 1)to filter out male sex hormones 2))to ensure that semen only contains sperm and seminal fluid 3)to provide only select nutrients to the developing sperm 4)to prevent activation of the immune system of the male against the developing sperm

to prevent activation of the immune system of the male against the developing sperm

What is the role of the corpus luteum? 1)to stimulate the female sexual response 2)ovulation 3)to produce the primary oocytes 4)to produce hormones that maintain the uterine lining during the first months of pregnancy

to produce hormones that maintain the uterine lining during the first months of pregnancy

t or f: Oocytes only complete meiosis II if they are fertilized.

true

t or f: The secretions of the bulbo-urethral glands neutralize traces of acidic urine in the urethra and serve as a lubricant during sexual intercourse.

true

Which of the following cells is returned to the basal lamina to continue the pool of dividing germ cells? 1)type A daughter cell or spermatogonium 2)secondary spermatocyte 3)type B daughter cell 4)primary spermatocyte

type A daughter cell or spermatogonium

Which of the following does NOT add substances to seminal fluid? 1)urethra 2)bulbo-urethral glands 3)prostate gland 4)seminal glands

urethra

Which of these male accessory ducts transports both sperm and urine? 1)ejaculatory duct 2)ductus (vas) deferens 3)urethra 4)epididymis

urethra

What part of the female duct system is the usual site of fertilization of the ovulated oocyte? 1)uterus 2)cervical canal 3)vagina 4)uterine (fallopian) tube (oviduct

uterine (fallopian) tube (oviduct)

After ovulation, the "egg" travels to the uterus through the ___ 1)ampullary canal 2)infundibulum 3)uterine tube 4)vagina

uterine tube

The canal that extends from the vestibule to the uterus is called the __ 1)perivestibular canal 2)vagina 3)uterine tube 4)fimbria

vagina