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effective pumps; provides power to transport blood to pulmonary and systemic circulatory system heart
sends blood from heart; must have a fresh supply of oxygen artery
connection between arteries and veins capilaries
to be supplied with blood oxygenated blood
to remove oxygen from deoxygenated blood
double walled membrane; encloses the heart pericardium
found in the pericardium; prevents friction when heart beats pericardial fluid
external layer of the heart epicardium
forms inner surface; lining of the heart endocardium
two upper chambers of the heart atria
two lower chambers of the heart ventricle
seperating walls of portition; located between right and left ventricles septum
narrow tip of the heart apex
gets blood from brain and upper limbs or forelimbs superior vena cava
conveying blood from the left ventricle, of the heart, to all of the body (except for the lungs) aorta
largest vein in the body; drains blood from the trunk and lower limbs or hindlimbs inferior vena cava
carries blood from heart to lungs pulmonary artery
a vessel that carries blood from the lungs to the left atrium of the heart pulmonary vein
oxygen poor blood; deoxygenated vein
middle and thickest layer of the heart layers myocardium
very smooth and has direct contact with blood pumping through heart endocardium
consists of the cardiac muscle myocardium
receives blood from all parts of body; deoxygenated blood atria
transports blood to all body tissues [(A)way ] arteries
walls are thicker than atrial walls; pumps blood to all body tissues ventricles
pumping blood; heart squeezes contration
pumping blood; heart expands relaxation
determines rate and regularity of heartbeat electrical impulses
1st occurs with closing of tricuspid valve and mitral valve 2nd shorter and higher pitched; occurs with the closing of pulmonary and aortic valves lubb/ dubb
measurement of pressure exerted against walls of vessels blood pressure
occurs when ventricles contract; highest pressure against wall systolic
occurs when ventricles relax; lowest pressure diastolic
120/80 normal blood pressure
Created by: hnguyen