​Tubal ligation causes sterility because ____.

Which structure is an example of a tissue?​

How does the human male body respond to a decrease in testosterone in the bloodstream? Your explanation should include the hormones, anatomical structures and feedback to correct for this decrease.

What cell type(s) are found in nervous tissue?​

​Asexual reproduction ____.

​Sperm are produced in the ____.

You observe a tissue with one free surface and several cell layers attached to a basal lamina. This is an example of ____.​

​The acrosome of a sperm cell contains ____.

​In the female, the ____ acts as a temporary endocrine gland and secretes ____.

​Which statement best describes the gametes of most animals?