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Campbell Biology Chapter 46 Quiz

Sperm develop in the _____.

Answer: seminiferous tubules


Sperm exit a male’s body via the _____.

Answer: urethra


Which pituitary secretion stimulates sperm production?

Answer: FSH


Which pituitary secretion stimulates the testes to secrete androgens?

Answer: LH


Which hormone(s) is(are) directly responsible for triggering the development of the secondary sex characteristics of males, such as beard growth?

Answer: androgens ( Androgens, such as testosterone, are responsible for both sperm production and the secondary sex characteristics of males.)


The secretion of androgens is regulated by a _____ feedback mechanism involving the _____ and _____.

Answer: negative … hypothalamus … pituitary gland


Sperm become capable of movement while in the _____.

Answer: epididymis


What is the usual site of the fertilization of an egg cell?

Answer: oviduct


A fertilized egg usually implants itself and develops in the _____.

Answer: uterus


Developing ovarian follicles primarily secrete _____.

Answer: estrogens


A rapid increase in the _____ level stimulates ovulation.

Answer: luteinizing hormone


Ovulation usually occurs on or about day _____ of a 28-day ovarian cycle.

Answer: 14


After ovulation, high levels of _____ inhibit _____ secretion.

Answer: estrogen and progesterone … FSH and LH


If there is no fertilization, degeneration of the corpus luteum results in a drop in _____, which results in the sloughing off of the uterus’s endometrium.

Answer: estrogen and progesterone


If there is fertilization, secretion of _____ by the early embryo maintains the corpus luteum.

Answer: human chorionic gonadotropin