The irregular ridge on the midline of the scrotum, formed from fusion of the urethral folds during development is the
|E)||base of the urogenital triangle.|
In the testis, sperm cells develop in the
|B)||interstitial cells (Leydig cells).|
The leftover portion of the process vaginalis that covers the testes is the
Large cells that nourish developing sperm cells and form the blood-testes barrier are
Given these cells:
1. primary spermatocytes
2. secondary spermatocytes
5. sperm cells.
Arrange the cells in the order in which they are produced during spermatogenesis.
From each primary spermatocyte, __________ sperm cell(s) is (are) produced; from each primary oocyte, __________ secondary oocyte(s) is (are) produced.
A comma-shaped structure on the posterior testis; maturation of sperm cells occurs here:
From the ejaculatory duct, sperm cells travel directly into the
|B)||prostatic part of the urethra.|
|C)||spongy part of the urethra.|
|D)||membranous part of the urethra.|
The cap (formed from the corpus spongiosum) over the distal end of the penis is the
|A)||bulb of the penis.|
|B)||crus of the penis.|
|C)||root of the penis.|
Erectile columns that form the dorsal surface and sides of the penis are the
|C)||crus of the penis.|
|E)||root of the penis.|
Which of these structures contributes the greatest percentage to semen?
This hormone is released from the hypothalamus and stimulates cells in the anterior pituitary.
__________ , which is secreted by the placenta, stimulates the synthesis and secretion of testosterone before birth.
Testosterone has a negative-feedback effect on
|E)||a, b, and c|
In the male, the process in which sperm cells, secretions of the prostate, and secretions of the seminal vesicles accumulate in the prostatic urethra is called
The visceral peritoneum covering the surface of the ovary is
At birth, a girl has in her ovaries many __________ that have started meiosis but stopped at prophase I.
A primary oocyte divides to produce a(n)
|E)||both b and c|
The layer of clear, viscous fluid that is deposited around a primary oocyte is the
The innermost cells of the cumulus mass are called the
In the process of oogenesis, a polar body
|A)||is formed before fertilization.|
|B)||is formed after fertilization.|
|C)||normally receives most of the cytoplasm of the cell.|
|D)||is a very cold cell.|
|E)||both a and b|
During ovulation, a(n) __________ is released from the ovary.
After ovulation, the granulosa cells of the follicle develop into a glandular structure called the
The funnel-shaped end of the uterine tube (fallopian tube) is the
The large, superior, rounded portion of the uterus is the
The innermost layer of the uterus is the
Which of these layers is shed during menses?
|C)||basal layer of endometrium|
|D)||functional layer of endometrium|
|E)||both c and d|
The superior, domed portion of the vagina is called the
In the female, erectile tissue that corresponds to the corpus spongiosum in the male is the
|A)||bulb of the vestibule.|
Concerning the breasts:
|A)||lactiferous ducts open on the areola.|
|B)||each lactiferous duct comes from a single alveolus.|
|C)||they are attached to fascia over the pectoralis major muscles by mammary (Cooper's) ligaments.|
|D)||even before puberty, the female breast is quite different from the male breast.|
The first episode of menstrual bleeding is called
During the menstrual cycle, the time between the ending of menses and ovulation is called the
|B)||luteal (secretory) phase.|
Which of these events is NOT correctly matched with the time when it occurs?
|A)||beginning of menses - day 1|
|B)||ovulation - day 14|
|C)||LH surge - day 21|
|D)||beginning of proliferative phase - day 5|
|E)||corpus luteum formed - days 14-26|
The hormone responsible for ovulation is
In the menstrual cycle, progesterone levels are highest during
|A)||the proliferative phase.|
|C)||the secretory phase.|
|E)||both b and d|
The cause of menses in the menstrual cycle is
|A)||increased progesterone production from the ovary, which produces blood clotting.|
|B)||increased estrogen secretion from the ovary, which stimulates the muscles of the uterus to contract.|
|C)||decreased progesterone and estrogen secretion by the ovary.|
|D)||decreased production of oxytocin, causing the muscles of the uterus to relax.|
|E)||decreased production of HCG.|
A woman with a typical 28-day menstrual cycle is most likely to become pregnant from sexual intercourse occurring on days
While the follicle is developing, a positive-feedback loop occurs in which __________ stimulates the follicle, which increases the secretion of __________, which stimulates GnRH secretion.
After fertilization, development of a full-term fetus depends upon
|A)||release of HCG by the trophoblast to maintain the corpus luteum.|
|B)||production of LH by the placenta.|
|C)||maintenance of the corpus albicans by prolactin.|
|D)||production of estrogen by the adenohypophysis.|
|E)||all of these|
During sexual intercourse, oxytocin and __________ both stimulate smooth muscle contractions in the uterus and uterine tubes.