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Cardiovascular Review- SA

Describe capillaries - join the arterial system with the venous system - most significant of blood vessels - provide cells with vital products - remove waste products from cells
Describe the heart - a hollow, muscular organ lying in the mediastinum that propels blood to entire body
Describe the SA node - located in upper portion of right atrium - has own built-in rhythm - initiate & transmit each heartbeat - sets basic pace for cardiac rate
How do veins return blood to the heart? - skeletal muscle contraction - gravity - respiratory activity - valves
How is blood supplied to the heart muscle? coronary arteries
Name the factors that influence blood pressure - resistance of blood flow - pumping action of heart - viscosity of blood - elasticity of artery -quantity of blood
Name the four structures responsible for electrical conduction of the heart - sinoatrial node - atrioventricular node - bundle of His -Purkinje fibers
Name the three layers of the heart - endocardium - myocardium - epicardium
What are the three layers of artery walls? - tunica externa - tunica media - tunica intima
What are the three major types of blood vessels? - arteries - veins - capillaries
What are valves? small structures within the veins that prevent the backflow of blood
What is endocarditis? inflammation of the inner lining of the heart and its valves
What type of blood do arteries carry? oxygenated blood
What type of blood do veins carry? deoxygenated blood
Where is each heart valve? - tricuspid valve - right atruium & right ventricle - pulmonic valve - pulmonary artery & right vetricle - mitral (bicuspid) valve - left atrium & left ventricle - aortic semilunar (aortic) valve - aorta & left ventricle
Created by: spencertasha