The cleaning up or removal of debris, dead cells, and scabs from a wound, principally through phagocytosis, is called _______________

Boyle's law states that the volume of a gas is proportional to the pressure exerted by that gas when the temperature is constant. Thus, as one descends:

a. pressure in the chest cavity decreases. b. pressure in the chest cavity increases. c. the oxygen level in the lungs increases to 32 percent. d. the carbon dioxide level in the lung increases to10 percent.

The left and right coronary arteries branch off the ________ portion of the aorta

A) inferior B) distal C) proximal D) superior