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MEDICAL TERMINOLOGY
CHAPTER 7 KEY TERMS
Term | Definition |
---|---|
Cancer | A genetic mutation of cells that causes them to grow and divide abnormally. |
Cortex | Outer part of the lobes of the thymus gland. |
Lymph | Clear, colorless, alkaline tissue fluid made up mostly of water, along with protein, fats, WBCs, and urea. |
Lymph nodes | Rich in specialized white blood cells; commonly called glands. |
Lymphadenitis | Inflamed gland; inflammation of a gland |
Lymphatic system | A part of the immune system that collects excess tissue fluid and returns it to circulation. |
Lymphatic vessels | Found throughout the body alongside arteries, veins, and capillaries. |
Lymphedema | Buildup of fluid in the lymph node. |
Medulla | Inner part of the lobes of the thymus gland. |
Metastasized | Spread to another part of the body. |
Phagocytes | WBCs that clean debris from lymph. |
Phagocytosis | A process in which WBCs engulf and destroy microorganisms, cell debris, and blood cells that are damaged, old, or abnormal. |
Platelets | Blood clotting agents. |
Spleen | Creates WBCs and antibodies; acts as a type of storage container for blood and platelets. |
Splenectomy | Surgical removal of the spleen. |
Superior vena cava | Lymph enters the circulatory system and combines with blood here. |
T lymphocytes | WBCs that are able to seek out and destroy abnormal cells. |
Thymus gland | Located above the heart and plays a role in immunity and protecting our bodies from cancer. |
Tonsillectomy | Surgical removal of the tonsils. |
Urea | A waste product of protein metabolism. |