Blood returning from body first enters the heart through what structure?

Skin, mucus membranes, sebaceous glands, sweat, and the pH of your stomach are examples of what type of immunity?

What is the function of fever?

Say you observe a blood cell under a microscope and notice that the cell looks shriveled and has undergone crenation. What sort of solution would you presume the cell is likely floating in?

Hemoglobin is a protein that carries O2 and some CO2.

What disease involves T cells attacking the body’s own cells?

What type of connective tissue is Areolar?

What mechanism uses ATP to engulf particles from its surroundings and is used by white blood cells to engulf bacterial cells?

Which of the following membranes surrounds the lungs?

Which of these would be an example of a monosaccharide?