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Luteinizing hormone stimulates the


A) seminiferous tubules of the testis.
B) pituitary to produce FSH.
C) follicle to produce inhibin.
D) corpus luteum to produce progesterone.

E) B) and D)
F) None of the above

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Milk production in humans is triggered in breasts after several days of ____ and ____ production by the ____.


A) estrogen,testosterone,ovaries
B) prolactin,human placental lactogen,hypothalamus
C) prolactin,human placental lactogen,anterior pituitary
D) oxytocin,estrogen,hypothalamus
E) oxytocin,androgen,anterior pituitary

F) C) and E)
G) None of the above

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What initiates menstrual flow?


A) the pituitary triggers it.
B) luteinizing hormone activity is at its peak.
C) estrogen activity is at a peak.
D) progesterone production is highest.
E) both progesterone and estrogen decline to low levels.

F) C) and D)
G) A) and E)

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Is asexual reproduction likely to happen more when the environment is "stable" or in a state of "flux"? Explain.

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The _______ undergo the first meiotic division in the production of sperm.


A) sertoli (sustentacular) cells
B) primary oocytes
C) spermatids
D) primary spermatocytes
E) spermatogonia

F) B) and C)
G) A) and E)

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Ovulation usually occurs on the ________ of a 28-day uterine cycle.


A) first day
B) 4th day
C) 14th day
D) 22nd day
E) last day

F) A) and B)
G) A) and C)

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The path of the sperm from the site of production to exiting the male body proceeds from


A) testes to urethra to vas deferens to penis.
B) urethra to vas deferens to seminal vesicles to testes.
C) seminiferous tubules to epididymis to vas deferens to urethra.
D) seminiferous tubules to vas deferens to epididymis to urethra.
E) vas deferens to seminiferous tubules to epididymis to urethra.

F) D) and E)
G) None of the above

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Which is NOT part of the mammalian male reproductive system?


A) testes.
B) epididymis.
C) penis.
D) prostate.
E) cervix.

F) A) and E)
G) C) and D)

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Following ovulation,a ruptured follicle


A) differentiates into the corpus luteum.
B) disappears and all of its cells disintegrate.
C) passes on as waste material down the oviduct with the egg.
D) mends itself and begins the maturation of another egg.
E) becomes a part of the epithelial covering of the ovary.

F) C) and D)
G) A) and C)

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The secretory phase is part of the


A) sexual cycle.
B) pituitary cycle.
C) testicular cycle.
D) ovarian cycle.
E) uterine cycle.

F) C) and E)
G) D) and E)

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Discuss how internal fertilization and the production of shelled eggs were important in the development of animals capable of living on land.

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Contrast the cloaca of birds and reptiles with the vulva of a mammal.

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Fertilization in humans normally occurs in the


A) uterus.
B) vagina.
C) outer third of the oviducts.
D) abdominal cavity between ovary and oviducts.
E) ovarian follicle at time of ovulation.

F) A) and B)
G) All of the above

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The female clitoris is homologous to the male


A) vas deferens.
B) glans penis.
C) scrotum.
D) prostate gland.
E) testes.

F) A) and E)
G) B) and D)

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Estrogen and progesterone provide feedback control on the


A) ovary.
B) uterus.
C) testes.
D) anterior pituitary.
E) prostate gland.

F) C) and E)
G) All of the above

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The egg grows in size well beyond the surface-area-to-volume restrictions of other single cells because it


A) is the germ line and is therefore not restricted by this law.
B) relies on a placenta to exchange gases and nutrients.
C) has a gradually diminishing metabolic rate and often relies on supporting cells to supply nutrition.
D) lacks mitochondria.
E) does not become living until it is fertilized;this is the definition of "life."

F) D) and E)
G) C) and D)

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