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Jenny Vu

SCI220-Human Anatomy

QuestionAnswer
Cardiovascular System Heart Pumps Blood Arteries transport blood away from heart Veins transport blood toward heart
Parietal Pericardium Inner layer of sac, secretes serous fluid
Visceral pericardium outer layer of heart =epicardium, secretes serous fluid.
pericardial cavity space between parietal &visceral filled with serous fluid and functions are lubrication.
Fibrous pericardium Touch outer layer, anchors heart prevents overfilling
Myocardium Cardiac muscle tissue
Endocardium Simple squamous epithelium
Superior & Inferior Vena cava Large veins, return deoxygenated blood from body to the heart.
Tricuspid Valve R, atrioventricular valve, prevents backflow into R. Atrium when R. ventricle contracts. Cusps formed of endocardium-sandwich of epithelium.
Right Ventricle Right Lower Chamber the heart
Papillary Muscle Projection of cardiac muscle
Pulmonary Veins Transport oxygenated blood from lung to Left atrium
Bicuspid Valve Left Atrioventricular valve also called Mitral Valve, prevents backflow into Left atrium when left ventricle contracts. Cusps formed of endocardium-sandwich of epithelium and dense CT.
Myocardium of left Ventricle thickest layer of cardiac muscle .
Heart Murmur Noise caused by blood leaking past "closed" valve.
Mitral valve prolapse Weakness in collagen of valve or chordae tendinae
Mitral stenosis Narrowed opening between valves, may be caused by calcium deposits or illness, restricts flow and requires heart to work harder.
Cardiac Muscle Striated muscle cells connected by intercalated discs which also conduct electrical impulses.
Sinoatrial (SA) node in R. atrium . initiated electrical impulse, is the pacemaker and is inherent Rhythmicity.
Internodal pathway Carries impulse from sinoatrial node to Atrioventricular node.
Atrioventricular (AV) node Delays impulse on way on to ventricles. is the only electrical path from atria to ventricles.
Created by: NightingaleJv
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