________ is controlled by a positive feedback loop and helps start labor.

Trisomy 21, otherwise known as ________________, occurs chromosome division produces a gamete with 2 copies of chromosome 21, which then combines with another gamete, resulting in three total copies.

_________________produce epinephrine and norepinephrine.  If excess levels are produced then __________develops.

_________________produce epinephrine and norepinephrine.  If excess levels are produced then __________develops.

Myxedema is caused by a ________ of _______ and is characterized by low metabolic rate.

When does independent assortment occur?

From fertilization through week 8, a developing fertilized egg is known as a ___________.

Which of the following is released from the posterior pituitary?

cAMP messenger system is used by _________

In males ________causes Sertoli cells to release androgen binding protein to make them receptive to _________________.