HSII Ch. 12 Vocab Pt. 3

route of blood flow through the liver

also called the bicuspid valve

death of cardiac muscle cells because of inadequate blood supply as in coronary thrombosis

heart muscle

deflection on ECG occurs with depolarization of atria

inflamed pericardium

membrane that surrounds the heart

blocked blood flow to peripheral arteries

venous blood flow from R atrium -> lung -> L atrium

• alternating expansion and recoil of arterial walls produced by alternating contraction/relaxation of ventricles
• travels in a wave away from the heart

cells in walls of ventricles relay nerve impulses from AV node to ventricles. causing them to contract

deflection of an ECG because of the depolarization of ventricles

• valves located between 2 ventricular chambers & the lg. arteries that carry blood away from the heart
• found in veins

• pacemaker
• where impulse conduction normally starts
• located in the wall of the R atrium near the opening of the superior vena cava