Oxygen-poor blood is _________ in color.

The thoracic duct and the right lymphatic duct empty lymph into the

Because lymphatic vessels have three tunics (intima, media, and externa) and valves, they structurally resemble

A reticulocyte is a cell formed during erythropoiesis that has lost its nucleus and all organelles except some ribosomes.

Both active and passive immunity can be acquired though natural or artificial means.

The disease called ___________ is caused by excessive secretion of glucocorticoids, and is characterized by redistribution of body fat to produce characteristic features such as “moon face.”

MHC class I molecules are

Which of the artery types contain the internal and external elastic laminae?

The cardiac center of the brainstem includes the

Activation of a CD4+ cell requires an APC to present antigen with