A&P 2 - Chapter 27/28

This is consistent with erection of the penis:

(-parasympathetic stimulation -dilation of arterioles -engorgement of sinusoids with blood -occlusion of veins)

This statement best describes the formation of a polar body during the process of oogenesis:

(Is formed before fertilization, is formed after fertilization)

During the secretory phase of the menstrual cycle, you normally expect this:

(maximum levels of progesterone, that the endometrium reaches its greatest degree of development)

Estrogen causes all of the following effects in adolescent girls except

-growth of the breasts. -(*growth of the pubic and axillary hair.) -vaginal metaplasia. -endometrial mitosis. -fat deposition.

Testosterone has all of these effects on males except:

-hair growth stimulation -increased protein synthesis -increased metabolic rate -(*growth of corpus luteum) -deepening of voice

This statement best describes why a woman who is taking birth-control pills that consist of only progesterone experiences the hot flash symptoms of menopause:

-inhibits GnRH in the hypothalamus -lack of LH prevents ovulation -lack of FSH prevents development of the follicles -inadequate estrogen production

All of the following are part of the spermatic cord EXCEPT this:

-testicular artery -lymphatic vessels -ductus (vas) deferens -(*ejaculatory duct)

Of a 28-day menstrual cycle (ovarian cycle), ovulation occurs on about this day:

14

After ovulation, an egg has about ____ to be fertilized, or else it dies.

24 hours

Following ovulation, a human egg cell can survive approximately this long:

24 hours

When a cell divides by meiosis, it ultimately produces ____ daughter cells.

4

Given these cells: 1. primary spermatocytes 2. secondary spermatocytes 3. spermatids 4. spermatogonia 5. sperm cells Arrange the cells in the order in which they are produced during spermatogenesis.

4. Spermatogonia, 1. Primary Spermatocytes, 2. Secondary Spermatocytes, 3. Spermatids, 5. Sperm Cells

This occurs in the male before puberty:

GnRH release is inhibited by testosterone

Pregnancy tests are based on the detection of ____ in the urine

HCG

The interstitial cells (cells of Leydig) of the testes produce this:

Testosterone

A Pap smear is used to detect the presence of abnormal cells here:

cervix

This tubular portion of the uterus extends downward into the upper part of the vagina:

cervix

The male penis is homologus with the _____ of the female.

clitoris

This female structure is the homolog of the male penis:

clitoris

These erectile columns form the dorsal surface and sides of the penis:

corpora cavernosa

At the time a woman begins her next ovarian cycle, the former mature follicle of the previous cycle is

corpus albicans

The energy for sperm motility comes from

fructose

This layer is shed during menses:

functional layer of endometrium (stratum functionalis)

This is a function of FSH in the male:

initiate spermatogenesis

In the ovarian cycle, progesterone levels would be at its highest levels during this time:

late in the postovulatory phase

The process of the crossing-over of genes occurs during this:

meiosis I

Penile cancer has been linked to human papiloma cancer. What other conditions is this cancer related to?

non-retractable foreskins

A fetus is nourished by way of a disc-shaped organ, the _____, attached to the urine wall.

placenta

When all sexually reproducing species of animals are considered, the one characteristic that most defines a female is

production of the larger gamete

From the ejaculatory duct, sperm cells travel directly into this:

prostatic urethra

This gland secretes a thick mucus like substance that contains fructose to nourish sperm cells, fibrinogen to cause semen to clot and prostaglandins that cause uterine contractions:

seminal vesicle

Sperm cells develop in this region of the testis:

seminiferous tubules

The final cellular transformation in the production of spermatozoa is called

spermiogenesis.

This ligament associated with the ovaries helps to connect them with the posterior body wall:

suspensory

Which of the following is an androgen?

testosterone

An erectile tissue present in the penis but absent from the clitoris is

the corpus spongiosum.

To get from the testis to the epididymis, sperm must pass through

the efferent ductules.

The superior curvature of the uterus is called

the fundus

The genetic sex of a child is determined by

the sperm.

Development of a girl's breasts at puberty is called

thelarche.

The hormone oxytocin aids the birth process by stimulating this:

uterine wall contractions

This clear glycoprotein layer is between the oocyte and the granulosa cells of an ovarian follicle:

zone pellucida

Ovulation is triggered by

LH

This statement best describes the fate of the corpus luteum if fertilization does not occur:

degenerates into the corpus albicans

Vasectomy, a procedure for surgical sterilization of the male, entails removal of part of the

ductus deferens.

Which of these occurs in first-stage labor?

effacement