mastering anatomy ch 27
All of the following statements referring to the uterine cycle are true except ________. FSH and LH directly promote development of the uterine endometrium a decrease in the levels of ovarian hormones signals menstruation the corpus luteum is formed from the ruptured follicle after ovulation estrogen is secreted by the developing follicle in the follicular phase of the cycle
FSH and LH directly promote development of the uterine endometrium
Which of the following will occur immediately after ovulation? The corpus luteum prepares to become a corpus albicans. The corpus luteum secretes estrogen only. The secretion of anterior pituitary gonadotropins is enhanced. The endometrium enters its secretory phase.
The endometrium enters its secretory phase.
Erection of the penis results from ________. a parasympathetic reflex parasympathetic activation of the bulbo-urethral glands a sympathetic reflex dilation of the veins in the penis
a parasympathetic reflex
Normally menstruation occurs when ________. blood levels of FSH fall off blood levels of estrogen and progesterone decrease blood levels of estrogen and progesterone increase the corpus luteum secretes estrogen
blood levels of estrogen and progesterone decrease
Female orgasm is required for conception. True False
false
Ovulation occurs near the end of the ovarian cycle. True False
false
The release of __________ encourages sustentocytes to release __________. inhibin; testosterone luteinizing hormone; testosterone luteinizing hormone; androgen-binding protein follicle-stimulating hormone; androgen-binding protein
follicle-stimulating hormone; androgen-binding protein
During what phase of the female's uterine cycle is the uterine lining shed? proliferative phase preovulatory phase menstrual phase secretory, or postovulatory, phase
menstrual phase
Which layer of the uterus is made of smooth muscle? perimetrium mesometrium myometrium endometrium
myometrium
During the secretory phase of the menstrual cycle ________. estrogen reaches its highest levels LH reaches its highest levels the Graafian follicle forms progesterone levels are at their highest
progesterone levels are at their highest
Which layer of the uterus is the site for implantation of a fertilized egg? perimetrium stratum basalis of the endometrium myometrium stratum functionalis of the endometrium
stratum functionalis of the endometrium
Which hormone promotes the formation of secondary sex characteristics such as the appearance of pubic, axillary, and facial hair; enhanced hair growth on the chest; and a deepening voice? luteinizing hormone (LH) follicle-stimulating hormone (FSH) gonadotropin-releasing hormone (GnRH) testosterone
testosterone
What is the master switch that determines whether an individual develops as a male? the Y chromosome testosterone estrogen the X chromosome
the Y chromosome
Formation of a secondary oocyte occurs during __________. ovulation pregnancy the follicular phase the luteal phase
the follicular phase
Human egg and sperm are similar in that ________. they have the same number of chromosomes they have the same degree of motility about the same number of each is produced per month they are about the same size
they have the same number of chromosomes
Viable sperm production is optimal below the body's core temperature. True False
true
Which of these male accessory ducts transports both sperm cells and urine? ductus (vas) deferens urethra epididymis ejaculatory duct
urethra
Which gland is NOT matched with its type of secretion? urethra: clear, viscous mucus that neutralizes urine seminal vesicles: 70% of seminal volume prostate gland: milky, acidic semen bulbourethral glands: lubricating secretion
urethra: clear, viscous mucus that neutralizes urine
What part of the female system is the usual site of fertilization of the ovulated oocyte? uterus uterine (fallopian) tube cervical canal vagina
uterine (fallopian) tube
