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

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

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

Secretions that enter blood come from which kind of gland?

Parathyroid hormone stimulates which of the following organs?

Which tropic hormone stimulates the release of adrenocorticotropic hormone?

Semen contains excretions from glands and?

What stimulates the hypothalamus to release growth hormone releasing hormone?

Uterine contractions stimulate the hypothalamus.  The hypothalamus in return stimulates the posterior pituitary to release which hormone?

This process during meiosis is the reason that siblings do not look exactly alike.