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Chapter 22

Aorta The main artery, which receives blood from the left ventricle and delivers it to all the other arteries that carry blood to the tissues of the body.
Arterioles Th smallest branches of arteries leading to the vast network of capillaries
Artery A blood vessel, consisting of three layers of tissue and smooth muscle that carries blood away from the heart.
Capillaries The small blood vessels that connect arterioles and venules; various substances pass through capillary walls, into and out o the interstitial fluid, and then on to the cells.
Coagulation The formation of clots to plug openings in injured blood vessels and stop blood flow.
Contusion A brise, or ecchymosis
Ecchymosis Discoloration of the skin associated with a closed wound; bruising.
Epistaxis A nosebleed.
Hematoma A mass of blood in the soft tissues beneath the skin.
Hemophilia A congenital condition in which the patient lacks one or more of the blood's normal clotting factors.
Hemorrhage Bleeding
Hypovolemic shock A condition in which low blood volume, due to massive internal or external bleeding or extensive loss of body water, results in inadequate perfusion.
Perfusion Circulation of blood within an organ or tissue in adequate amounts to meet the current needs of the cells.
Pneumatic Antishock garment (PASG) An inflatable device that covers the legs and abdomen; used to splint the lower extremities or pelvis or to control bleeding in the lower extremities, pelvis, or abdominal cavity.
Pressure point A point where a blood vessel lies near a bone; useful when direct pressure and elevation do not control bleeding.
Shock A condition in which the circulatory system fails to provide sufficient circulation so that every body part can perform its function; also called hypoperfusion.
Tourniquet The bleeding control method of last resort that occludes arterial flow; used only when all other methods have failed and the patient's life is in danger.
Veins Th blood vessels that carry blood from the tissues to the heart.
Created by: azoch