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Oriole - HS heart

heart structures (internal & external) and flow of blood

apex the V-shaped point of the heart
auricles flap-like extensions of the atria that increase their storage volume
bicuspid valve keeps blood from flowing back into the left atrium when the heart contracts
chorae tendinea "heartstrings" that stabilize atrioventricular valves during systole
interventricular septum layer of heart muscle that separates the left and right "pump" chambers
left atrium receives and pools oxygen rich blood coming back to the heart from the lungs
left ventricle "pump" chamber that forces blood into the systemic circuit
myocardium literally "muscle of the heart"
papillary muscles found inside the ventricles; pull on the "heartstrings" in keeping the AV valves from everting
pulmonary arteries left and right ones carry blood from the heart to the lungs
pulmonary semilunar valve blocks oxygen-poor blood from flowing back into the heart when it relaxes
pulmonary trunk short blood vessel headed toward the lungs that splits into left and right parts
pulmonary veins carries blood from the lungs to the heart
right atrium receives and pools oxygen poor blood coming back to the heart from the systemic circuit
right ventricle "pump" chamber that forces blood into the pulmonary circuit
tricuspid valve keeps blood from flowing back into the right atrium when the heart contracts
vena cavae blood vessels that carry blood from the body back to the right atrium
aorta major vessel that supplies blood to the head, arms, trunk, and legs
aortic semilunar valve prevents oxygen-rich blood from flowing back into the heart as it relaxes
Created by: nstevens



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