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Ch 25 & 26 test revi
| Term | Definition |
|---|---|
| AV Node | Part of the cardiac conduction system located just above the ventricles between the atria |
| Pericardium | A membrane that covers the heart and large blood vessels attached to it |
| Pulmonary Circulation | The route blood takes from the heart to the lungs and back again |
| Thickest layer of the heart wall | myocardium |
| Stenosis | Narrowing of a body part or passage |
| Viscosity | Thickness |
| Perkinje Fibers | Part of the cardiac conduction system located in the lateral walls of the ventricles |
| Diastolic Pressure | Pressure in the arteries when the ventricles relax |
| Systemic Circulation | The route blood takes from the heart to the body cells and back to the heart |
| Endocardium | The innermost layer of the heart wall |
| Capillary | Smallest type of blood vessel |
| Vasodilation | widening of blood vessel walls |
| SA Node | Part of the cardiac conduction system that generates the electrical impulse that initiates a heartbeat |
| Epicardium | Another name for the visceral pericardium |
| Coronary Circulation | Route the blood takes to deliver oxygen to the heart muscle |
| Systolic Pressure | Pressure in the arteries when the ventricles contract |
| Cardiac Output | Total amount of blood pumped out of the heart in 1 minute |
| Vasoconstriction | Tightening of blood vessels |
| Hepatic Portal System | collection of veins that carries blood to the liver |
| Bundle of HIS | Part of the cardiac conduction system that splits into right and left branches |
| Agglutination | clumping of cells |
| agranulocyte | WBC with no cytoplasmic granules |
| basophil | cells releasing heparin and histamines |
| coagulation | Process of blood clotting |
| embolus | blood clot "on the move" |
| eosinophil | fights viruses and parasitic infections |
| erythrocyte | RBC |
| erythropoietin | stimulates bone marrow to produce RBCs |
| fibrinogen | Plasma substance important in blood clotting |
| globulins | Blood proteins that transport lipids |
| granulocyte | Neutrophils, eosinophils, and basophils |
| hematocrit | measures percentage of RBCs in blood |
| hemostasis | control bleeding |
| leukocyte | WBC |
| lymphocyte | WBCs that provide immunity |
| monocyte | Cell with a large, kidney-shape nucleus that destroys bacteria, viruses, and toxins in the blood |
| neutrophil | Destroys bacteria, viruses, and toxins by engulfing and then ingesting them |
| platelets | cell fragments assisting in blood clotting |
| serum | plasma with cells and clotting factor removed |
| thrombocytes | other term for platelets |
| thrombus | blood clot |
Created by:
lcorbett09