biology ch. 42 & 43
Terms
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- Atrioventricular (AV) valve
- valve between the atrium and ventricle
- semilunar valves
- valves located at the exits of the heart
- SA, sinoatrial node
- pacemaker for heart, located in the right atrium
- AV, atrioventricular node,
- relay point for nerve impulses in heart, located in wall between right atrium and ventricle
- endothelium
- simgle layer of cells providing a smooth surface for low resistance to blood flow
- erythrocytes
- red blood cells
- platelets
- pieces of cells involved in clotting
- leukocytes
- white blood cells
- pluripotent stem cells
- stem cells that develop into all blood cells and platelets
- erythropoietin (kidneys)
- hormone that stimulates the production of erythrocytes
- fibrinogen
- inactive form of clotting agent
- fibrin
- active form of sealing agent
- thrombus
- when a clot forms in a blood vessel as a result of fibrin and platelet coagulation and clumping
- low-density lipoproteins (LDL\'s)
- bad cholesterol
- High-density lipoproteins
- good cholesterol