A&P II: chapter 28- the reproductive system

the average length of the menstrual cycle is

28 days

mature ova develop from a pool of oogonia that ____

are foxed at brith with fewer ever developing into a mature ova

a boy who has not passed through puberty sustains an injury to his anterior pituitary such that FSH is no longer released, but LH is normal. After he grows to maturity, one would expect that he would ____

be sterile

what hormone stimulates follicle growth?

both FSH and estrogens

the accessory reproductive organs include structures that are responsible for ____

both secretion of fluids into the reproductive tract and transport of gametes

the small paired structures at the base of the penis that produce a lubricating secretion are the

bulbourethral glands

the corpus luteum may

degenerate into a corpus albicans if fertilization does not occur be rescued from degeneration by HCG if fertilization occurs

all of the following can be considered male secondary sex characteristics except the

development of testes as opposed to ovaries

which of the following statements about spermatogenesis is FALSE?

each spermatid forms two sperm

The rete testis is connected to the epididymis by

efferent ducts

the rate testis is connected to the epididymis by

efferent ducts

menstruation is triggered by a drop in the levels of

estrogen and progesterone

in the uterine cycle, the proliferative phase is promoted by ____, whereas the secretory phase is promoted by _____

estrogen; progesterone

the developing follicle cells of the ovaries secrete

estrogens

fertilization of an oocyte occurs in the

fallopian (uterine) tubes

oogenesis differed from spermatogenesis in the

final number of gametes produced and timing of meiosis II

the reproductive system includes

gonads, external genitalia, ducts that receive and transport the gametes, and accessory glands and organs that secrete fluids

select the correct statement about the hormonal events of the ovarian cycle

high estrogen levels result in a surge of LH release

estrogens have all of the following functions except

increasing blood cholesterol

the role of follicle stimulating hormone in males is to

initiate sperm production in the testes

all of the following are true of the vagina, except that it

loses a portion of its lining during menstrual flow

the hormonal trigger for menstruation involves a ____

loss of progesterone secretion from the corpus luteum

this hormone stimulates the testes to secrete testosterone

luteinizing hormone

the muscular layer of the uterus is the

myometrium

which of the following statements about oogenesis is FALSE?

oogenesis occurs continuously from puberty until menopause

this organ is composed of three cylindrical masses of erectile tissue each surrounded by a fibrous tissue

penis

sperm are moved along the ductus deferens by

peristaltic contractions

this structure lies posterior to the bladder and anterior to the rectum and secretes an alkaline, fructose filled fluid

seminal vesicle

developing spermatozoa are nourished by the

sertoli cells

inhibit is secreted from the ____ and acts to reduce the secretion of ____

sertolicells: FSH

the function of the epididymis is ____

sperm maturation

the cells that are formed at the end of meiosis are called

spermatids

as developing sperm cells begin the process of meiosis they become

spermatocytes

semen contains all of the following, except

spermatocytes

the stem cells that develop into sperm are called

spermatogonia

these cells may eventually become spermatozoa

spermatogonia

the process of spermiogenesis produces

spermatozoa

the reduction in progesterone and estrogen that occurs at the beginning of the follicular phase is responsible for stimulating follicular development through ____

stimulating the release of FSH

____promotes spermatogenesis

testosterone

the structure that transports the ovum to the uterus is the

uterine tube

which of the following hormones controls the release of anterior pituitary gonadotropins?

GnRH

which of the following will occur after ovulation?

The endometrium enters its secretory phase.

major functions the accessory glands of the male reproductive system include all of the following, except

production of spermatozoa

after ovulation, the corpus lute secretes ____

progesterone

the structure that surrounds the urethra and produces an alkaline secretion is the

prostate gland

which of the following phases or processes in the monthly reproductive cycle of the female occur simultaneously?

regression of the corpus luteum and a decrease in ovarian progesterone secretion

the straight tubules in the testis lead into the ____

rete testis

the ovaries produce

secondary oocytes, estrogen and progesterone

____ represent the first haploid stage of spermatogenesis

secondary spermatocytes

the sustentacular cells of the seminiferous tubules do all of the following, except

secrete testosterone