12.8 Review Questions

4. What are male gametes called?
a. ova
b. sperm
c. testes
d. testosterone

5. Leydig cells ________.
a. secrete testosterone
b. activate the sperm flagellum
c. support spermatogenesis
d. secrete seminal fluid

6. Which hypothalamic hormone contributes to the regulation of the male reproductive system?
a. luteinizing hormone
b. gonadotropin-releasing hormone
c. follicle-stimulating hormone
d. androgens

7. What is the function of the epididymis?
a. sperm maturation and storage
b. produces the bulk of seminal fluid
c. provides nitric oxide needed for erections
d. spermatogenesis

8. Spermatogenesis takes place in the ________.
a. prostate gland
b. glans penis
c. seminiferous tubules
d. ejaculatory duct

9. What controls whether an embryo will develop testes or ovaries?
a. pituitary gland
b. hypothalamus
c. Y chromosome
d. presence or absence of estrogen

10. Without SRY expression, an embryo will develop ________.
a. male reproductive structures
b. female reproductive structures
c. no reproductive structures
d. male reproductive structures 50 percent of the time and female reproductive structures 50 percent of the time

11. The timing of puberty can be influenced by which of the following?
a. genes
b. stress
c. amount of body fat
d. all of the above