Multiple Choice Quiz

Please answer all questions


1	During embryonic development
		A)	testes do not develop in the absence of testosterone.
		B)	testosterone stimulates development of the paramesonephric duct.
		C)	the mesonephric duct degenerates in the absence of testosterone.
		D)	the presence of m,llerian inhibitory factor is required for development of the uterus.


2	Inhibin
		A)	is only secreted by the Sertoli cells.
		B)	specifically inhibits the secretion of FSH.
		C)	specifically inhibits the secretion of GnRH.
		D)	specifically inhibits the secretion of LH.


3	During prepubertal development
		A)	androgens are required for the development of axillary hair in both males and females.
		B)	androgens have no role in pubertal development in females.
		C)	estrogens stimulate the development of body hair.
		D)	growth hormone is necessary for growth of the larynx in males.


4	In the male
		A)	aromatization of testosterone is required to prior to conversion to dihydrotestosterone.
		B)	testosterone is produced by the Sertoli cells.
		C)	FSH is required for testosterone production.
		D)	androgens induce erythropoiesis.


5	The Sertoli cells
		A)	are joined functionally by tight junctions.
		B)	synthesize and secrete testosterone.
		C)	are stimulated to secrete hormones by LH.
		D)	all of the above.


6	During spermatogenesis
		A)	the secondary spermatocytes divide to form spermatids.
		B)	the primary spermatocytes are haploid.
		C)	LH is required indirectly.
		D)	the secondary spermatocytes are diploid.


7	Following a vasectomy
		A)	spermatogenesis ceases.
		B)	the secondary sex characteristics regress.
		C)	semen volume is decreased.
		D)	sperm cells are not transported into the urethra.


8	During the menstrual cycle
		A)	the endometrial proliferative phase is characterized by high progesterone.
		B)	ovulation occurs on approximately day 14 of an "average" cycle.
		C)	follicles are developing during the endometrial secretory phase.
		D)	menstruation is stimulated by elevated progesterone concentrations.


9	The ovulatory surge of LH is stimulated by
		A)	removal of progesterone negative feedback.
		B)	increased secretion of FSH.
		C)	estradiol positive feedback.
		D)	decreased secretion of GnRH.


10	Which of the following is true concerning fertilization?
		A)	Capacitation occurs after the sperm cells penetrate the zona pellucida.
		B)	The acrosome contains enzymes necessary for penetration of the zona pellucida.
		C)	The second meiotic division occurs after the sperm penetrates the secondary oocyte.
		D)	Fertilization occurs in the uterus.


11	Following fertilization
		A)	the blastocyst begins to undergo nidation on day six.
		B)	the inner cell mass secretes the hCG necessary to maintain pregnancy.
		C)	the morula arises from the blastocyst.
		D)	the placenta forms from the uterine endometrium.


12	The placenta
		A)	has a relatively low metabolic rate.
		B)	facilitates the mixing of fetal and maternal blood.
		C)	produces the majority of the constituents of the amniotic fluid.
		D)	secretes a hormone that stimulates glucose sparing by maternal tissues.


13	Steroid hormone synthesis by the placenta
		A)	is a complete process.
		B)	requires fetal participation.
		C)	produces the same hormones secreted by the adult.
		D)	does not require cholesterol form the maternal blood.


14	Which of the following are not required for the initiation of uterine contractions?
		A)	Estradiol
		B)	Prostaglandin E2.
		C)	Prostaglandin F2.
		D)	Oxytocin.


15	Sucking stimulates
		A)	increased oxytocin secretion from the anterior pituitary.
		B)	decreased prolactin secretion from the anterior pituitary.
		C)	milk production and ejection.
		D)	increased fertility.

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