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