1. the fluid-filled central cavity of an ovarian follicle is called the ______.

2. most of the mass of the testis is composed of the __________.

3. another name for tetraiodothyronine is ___________;it is secreted by the ___________ gland.

4. two glands derived from neural tissue are the ___________ and the _________.

5. another name for vasopressin is ___________; it is secreted by the ____________.

6. menstruation is caused by a _______________ (increase/decrease) in the secretion of estrogen and progesterone.

7. the structure that secretes estrogen and progesterone for the first 10 weeks of pregnancy is the ___________.

8. the hormone tested for in a pregnancy test is ____________.

9. the hormone named in question 8 is produced by the ____________.

10. the hormone named in question 8 has an action similar to which pituitary hormone?____________.