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Heart.

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athompson83's version from 2016-10-25 01:32

Section

Question Answer
Blood enters the superior and inferior vena cava then goes tothe right atrium
What are the 4 valves of the heart? Remember toliet paper my asswTricuspid, Pulmonary valve, Mitral/Bicuspid, Aortic Valve
Which side of the heart is the strongest?the left side
Pericardial Sac is where?surrounds the heart.
The outer layer of the heartepicardium
The valve between the left atrium and left ventriclebicuspid/mitral valve
Instrument used to listen to the heart soundsstethoscope
Arteries carry bloodaway from the heart
Veins carry bloodto the heart
Myocardiummiddle layer of heart
Endocardiuminnermost layer, smooth, shiny lining of the heart
COcardiac output
SVstroke volume
HRheart rate
Preloadthe amount of pressure or "stretching force" against the ventricular wall at end-diastole.
Diastoleatrial relaxation, followed by ventricular relaxation
Should the SA node faile to fire, this node will take overNA Node
Myocardiumthick strong muscles, the middle and the thickest layer.
Pericardiuma sac that surrounds and protects the heart.
What are the three layers of the sac that surrounds and protects the heartepicardium, inner serous pericardium, pericardial space or cavity.
What are the layers within arteries and veins?tunica adventitia, tunica intima, internal elastic lamina
Tunica intima layerthinnest layer - a single layer of simple squamous endothelium held together by intercellular matrix
Tunica adventitiaoutermost layer, composed of connective tissues and nerve cells as well as nutrient capillaries in vessels
Tunica mediathe middle layer- contains the thickest elastic fibers as well as connective tissue composed of polysaccharides.
The 2 upper chambers of the heart are what?right and left atria (receiving centers for blood)
The 2 lower chambers of the heart are what?right and left ventricles
Ventricles arehigh pressure chambers that pump blood out of the heart
What are the functions of the cardia valves?they allow blood to flow in only one direction
Conduction system of the heart isSA (sinoatrial) node pacemaker ; AV atrioventricular node; bundle of his; right and left bundle branches; purkinje fibers
memorize
What is the pacemaker of the heart? SA node
Question Answer
cardiac output isthe amount of blood pumped by the ventricles in 1 minute.
What is the pacemaker of the heart?SA node
Coronary Arteriesdelivers oxygenated blood to the myocardium
memorize