The __________ secrete(s) __________, which promotes Na + and water retention.

The ___________ can be found as part of the epithalamus, near the superior colliculi of the midbrain.

The endometrium is the thickest during the _______ phase of the uterine cycle.

The hormone that works with estrogen to prepare the endometrium for implantation of a fertilized egg is

The parathyroid gland secretes which hormone?

Which of these hormones is secreted by the adrenal medulla?

Which portion of a blastocyst develops into the placenta?

What interventional procedure may be indicated by looking at the abnormality shown in the image?

Roughly how many days after fertilization does implantation occur?

The first body cavity is called the __________.