Immune System

Front

Tiny blood vessels small enough that red blood cells must pass through them one at a time

Back

Capillaries

Front

Blood cells that carry oxygen out to the organs and tissues of the body

Back

Red Blood Cells

Front

The liquid part of the blood

Back

Plasma

Front

Blood vessels that carry blood away from the heart

Back

Arteries

Front

Masses of tissue that filter out bacteria and other foreign matter

Back

Lymph Nodes

Front

Blood cells that fight disease

Back

White Blood Cells

Front

Blood cells that help stop bleeding by causing blood to clot

Back

Platelets

Front

A pale fluid that carries white blood cells through the lymphatic system

Back

Lymph

Front

Blood vessels that carry blood back to the heart

Back

Veins

Front

When an artery leading to the brain becomes completely clogged, brain cells starve and die from lack of oxygen.

Back

Stroke