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25 Cards in this Set
- Front
- Back
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The loose-fitting sac around the heart is the...
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Paricardium
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The SA node relags impulses to the AV node that is responsible for the heart beat
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False, The AV node Stimulates the SA node.
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What is the path of blood from the vena cava to the lungs?
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Right A tricupsid right ventricle semi lunar pulonary artery
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Osmotic pressure forces molecules within the blood through capiullary walls?
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No
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What makes up the "Skeleten" of heart?
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Fibrious connective Tissue
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What 2 things might serve as a secondary pacemaker?
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AV Node, Purkinjie Fibers
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Which valves close when the ventricular walls contract?
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Bi and tricupsids
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Is ventricular fibrilation life-threatening?
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YES
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Is the SA (sinoatrial) node self-exciting? (triggers itself to fire)
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YES
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What is a bradycardia?
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Slow Heartbeat
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The P-Q interval is how long what takes
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impulse to move from SA to ventricle muscle.
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What causes the T wave?
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polerization of ventricles
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What causes the P wave?
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Depolorization of atreal muscles
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Blockage of a coronang artery causes a pain called _________ pectoris
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Angina
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The amount of capillaries in tissue depends on it's
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rate of metabolism
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What is Starlings Law?
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Greater the length, the greater the force it contracts
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Plasma proteins that remain in the blood capillaries help to maintain _____ pressure
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Osmotic
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What are the important facts about atrial nutriuretic factor?
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A hormone released by muscles of heart stops release of Rech??? from kidney that stops aldosterone
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When is blood pressure greatest in systemic arteries
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Ventricular systol
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What major vessel drains the face and scalp?
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External Jugular
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Which type of blood vessel serve as a blood reservoir?
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Veins
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Impulses caused by acetylcholine are _______ and cause the heart to _______
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parasympathetic, slow down
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What is the path of a cardiac impulse?
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SA node > AV Node > AV Bundle > Pertinge Fibers
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What are the branches of the aorta?
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Right Coronary, brachoideplaphics, subclavian
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Unsaturated fats will _____ the susceptibility to atherosclerosis
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not increase
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