Reproductive system Flashcards
What will happen to the penis if the arteries in the penis dilate?
The male attains an erection
On a warm day why will the cremaster muscle be relaxed?
Normal sperm development depends on testes being 1.1C cooler than body temperature
Which structures move with the testes during their descent of the abdomen?
Ductus deferens, testicular artery, lymphatic vessels and nerves
Which of the following is NOT a function of sustentacular cells?
Producing androgens, particularly testosterone
How is the generation of four sperm possible from one spermatogonium?
Meiosis 1 yields two haploid secondary spermatocytes which go through meiosis 2 and become four haploid spermatids
Which layer of the uterus is sloughed off by menstruation
Functional layer of endometrium
What event occurs in the uterine cycle when the levels of estrogens and progesterone decline?
Menses
What is the fate of the corpus luteum of fertilization does NOT occur?
It denigrates into a corpus albicans
Oral contraceptives contains estrogens and progesterone. What effect does taking oral contraceptives do to the menstrual cycle?
Inhibits ovulation
Why does the level of FSH rise and remain high during menopause?
Estrogen levels decline
Which of the following is a function of the ovaries?
Secreting inhibit which controls FSH production
How is an oocyte transported along the uterine tube?
Ciliary movement “turns on” just before ovulation to propel oocyte. Peristaltic contractions of the uterine tube propel the oocyte.
Which is true about oogenesis?
Oogonia complete their mitotic divisions before birth
Why does oogenesis yield only one functional ovum?
Oogenesis produces 2 or 3 polar bodies, which later desintegrate.
What changes are observed in the ovarian cycle if the LH surge does not occur?
Completion of meiosis 1 by the primary oocyte and ovulation will not occur
What happens during the process of spermiogenisis?
Spermatids differentiate into mature sperm
An inability to contract the ischiocavernosus & bulbospongiosis muscles impedes which parts of the male sex act?
Ejaculation & orgasm
What is a direct effect on FSH secretion in males?
The rate of sperm production decreases
When stem cells called spermatogonia divide, one differentiates into a primary spermatocyte. What happens to the second daughter cell?
It remains in the outer layer of the seminiferous tubule
In the male reproductive system, the prostate gland releases an antibiotic called___? This protects against urinary tract infections in the male.
Seminaplasmin
What statement is true with regards to female anatomy?
The uterus is superior to bladder, and anterior to the rectum. Uterus is suspended from the broad ligament & attaches to lateral body wall. Risk to pelvic inflammatory disease secondary to STD’s is higher in females.
Ifa male has his prepuce surgically removed, what has happened to him?
He has been circumcised
What benefit does the acidic PH of the vagina provide?
Prevents bacterial, fungal, and parasitic infections
Which statement is true with regards to spermatogenesis?
The spermatozoa become motile when they are with in the epididymis
Which scenario results in females if GnRH is absent or it is secreted as a constant rate, rather then in pulses?
FSH & LH secretion stops with in hours
What effect does blockage of both uterine tubes by scare tissue (resulting in an STD) have on a women’s ability to conceive?
She becomes sterile
