12.9 Review Questions

What are male gametes called?

1. ova
2. sperm
3. testes
4. testosterone

Leydig cells ____.

1. secrete testosterone
2. activate the sperm flagellum
3. support spermatogenesis
4. secrete seminal fluid

Which hypothalamic hormone contributes to the regulation of the male reproductive system?

1. luteinizing hormone
2. gonadotropin-releasing hormone
3. follicle-stimulating hormone
4. androgens

What is the function of the epididymis?

1. sperm maturation and storage
2. produces the bulk of seminal fluid
3. provides nitric oxide needed for erections
4. spermatogenesis

Spermatogenesis takes place in the ____.

1. prostate gland
2. glans penis
3. seminiferous tubules
4. ejaculatory duct

What controls whether an embryo will develop testes or ovaries?

1. pituitary gland
2. hypothalamus
3. Y chromosome
4. presence or absence of estrogen

Without SRY expression, an embryo will develop ____.

1. male reproductive structures
2. female reproductive structures
3. no reproductive structures
4. male reproductive structures 50 percent of the time and female reproductive structures 50 percent of the time

The timing of puberty can be influenced by which of the following?

1. genes
2. stress
3. amount of body fat
4. all of the above