High levels of estrogen during the follicular phase of the ovarian activity will lead to?

Which of the following is a sign of hyperthyroidism?

Which of the following events leads to ovulation?

Spermatogenesis takes place in which structure?

After ovulation the secondary oocyte should normally enter which structure first?

Which anterior pituitary gland hormone stimulates the leydig cells to produce testosterone?

Developing sperm require high levels of testosterone.  Which cell produces testosterone?

Secretions that enter blood come from which kind of gland?

Parathyroid hormone stimulates which of the following organs?

Semen contains excretions from glands and?