Reproductive System EXAM THREE Flashcards
- Which of the following hormones is not involved in the regulation of the number of sperm produced in the testes?
inhibin
PSA
Gonadotropin-releasing hormone
testosterone
PSA
2 Which of the following statements about myoid cells is true?
They form a straight tubule that conveys sperm into the rete testis.
When they contract they cause wrinkling of the scrotal skin.
They elevate the testes.
They surround the seminiferous tubules and contract rhythmically to squeeze sperm and testicular fluid through the tubules out of the testes.
They surround the seminiferous tubules and contract rhythmically to squeeze sperm and testicular fluid through the tubules out of the testes.
3 Which of the following absorb heat from the testes?
the testicular veins
the pampiniform plexus
the testicular arteries
the interstitial cells
the pampiniform plexus
4 Which of the following structures passes through the inguinal canal?
the spermatic cord
the ejaculatory duct
epididymis
the ductus deferens
the spermatic cord
5 The _______________ absorb excess testicular fluid.
interstitial cells
glans penis
seminal glands
stereocilia
stereocilia
- Which of the following structures makes up most of the male urethral length?
prostatic urethra
membranous urethra
ejaculatory duct
spongy urethra
spongy urethra
7 All of the following statements about a vasectomy are true except:
it is 50% reversible because the ligatures will eventually be phagocytized.
it is the most effective method of birth control.
the part of the ductus deferens that lies in the scrotum is cut.
it is a minor surgical procedure.
it is 50% reversible because the ligatures will eventually be phagocytized.
8 Which of the following gases is essential for normal erection?
carbon dioxide
nitric oxide
oxygen
carbon monoxide
nitric oxide
9 The blood-testis barrier is made up of ________ cells.
epithelial
Sertoli
Leydig
spermatogonia
Sertoli
10 The meiotically active cells in the testes lie in the ___________.
blood-testis barrier
epididymis
adluminal compartment
basal compartment
adluminal compartment
11 Xenobiotics are
substances that activate the mature sperm.
substances needed for normal sperm maturation.
substances with estrogen effects, which block the action of male hormones, and may be the cause of the decrease in male fertility seen over the last 50 years.
antibodies formed by the female against sperm.
substances with estrogen effects, which block the action of male hormones, and may be the cause of the decrease in male fertility seen over the last 50 years.
12 Which of the following organs is not part of the brain-testicular axis?
the anterior pituitary
the testis
the posterior pituitary
the hypothalamus
the posterior pituitary
13 Which of the following statements about testosterone is false?
Testosterone boosts the basal metabolic rate.
Testosterone is the basis for libido in males and to some extent in females.
In certain neurons in the brain, testosterone is converted to estradiol to bring about its stimulatory effects.
Testosterone produced in the adrenal glands will support testosterone-mediated functions if the supply from the testis is decreased.
Testosterone produced in the adrenal glands will support testosterone-mediated functions if the supply from the testis is decreased.
14 The broad ligament would contain all of the following structures except the __________.
ovarian ligament
mesovarian
ovarian blood vessels
suspensory ligament
ovarian ligament
15 The __________ follicle is the mature ovarian follicle.
primordial
secondary
vesicular
primary
vesicular
