University of North Carolina

BIO 101

Human Reproduction II

1)What is the name of the tubules within the testes that sperm develop in?

2. How long does sperm formation take?

3. What process does a primary spermatocyte need to go through to make sperm?

4. What phase of meiosis are primary oocytes stopped short in at a female’s birth?

A female makes her first secondary oocyte when she is about how old?

5. Compare and contrast oogenesis and spermatogenesis:

6. Briefly describe female cycle pre-ovulatory and the post-ovulatory phase:

7. In females, to promote ovulation, what hormones are produced from the hypothalamus and the pituitary?

8. How do these compare to what the male hypothalamus and pituitary secrete? 16.What cells secrete estrogen?
9. What cells secrete progesterone? What cells secrete LH and FSH?

10. Ovulation is not actually the release of a cell that has completed meiosis. What kind of cell is released?

11. Using Fig 27.6, describe in words what happens each through the 28 day cycle:

• the uterus lining:

• the ovaries: FSH

• the levels of FSH:

-the levels of LH:

-the levels of estrogen:

• the levels of progesterone:

12. A student tells another student that the “withdrawal” method of birth control is as effective at preventing pregnancy as birth control pills. Is the student right?

13. For sexually active people, are any of the contraceptives discussed in 27.8 also effective at blocking STDs? Which?

14. How does each structure of the sperm (Fig 27.9B) support the functions of sperm.

Flagellum?

Mitochondria? Nucleus?

Shape of head?