Lymphatic System

a white blood cell that is involved in fighting infection

a foreign substance that causes the body to make antibodies

a red blood cell that transports oxygen and carbon dioxide to and from body tissues

proteins produced by leukocytes that bind with and disable antigens

related to or containing the watery fluid (lymph) collected from body tissues

All pathogens are infectious, but not all of them are virulent or contagious.

High numbers of monocytes in the body indicate a chronic infection.

____ are important to the function of the immune or lymphatic system.

Which of the following terms describes blood vessels that carry oxygenated blood away from the heart?

A(n) ____ is a very small pathogen that invades and reproduces inside other cells and is usually spread through contact with body fluids.