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Bio 669 Cardiac Exam With Complete Solution
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Bio 669 Cardiac Exam With Complete Solutioncirculatory system is made up of the - ANSWER blood, heart, blood vessels, lymphatic
vessels
heart chambers - ANSWER right atrium and ventricle, left atrium and ventricle (larger)
heart wall layers - ANSWER epicardium, outer myocardium, middle muscle
endocardium, inner
pumping phases - ANSWER diastole, fill systole, pump
action potential SA normal rate - ANSWER 60-100
what determines cardiac performance/output? - ANSWER preload, afterload,
contractility
venules - ANSWER smallest veins, receive capillary blood
Venous blood flow- ANSWER venules, into larger and larger veins until it reaches venae
cavae then right atrium
Vessel walls- ANSWER tunica intima (inner) tunica media (middle) tunica externa (outer)
blood flow affected by?- ANSWER b/p, restriction or restistance w/in vessels, viscosity,
anatomic defects that cause turbulent or laminar flow, distensibility of vessels
cardiac output factors- ANSWER resistance and blood volume
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