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