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Bio lab 8

Cardiovascular system

why are valves between the atria and ventricles needed? valves prevent backward flow of blood
why are valves between ventricles and great arteries needed? to push blood in the right direction
What cellular structures allow for communication between cardiac muscle cells? gap junction
what are the 2 additional names for the LEFT atrioventricular valve? mitral valve & bicuspid valve
What arteries of the circulatory system carry deoxygenated blood? pulmonary arteries
what 3 veins deliver blood to the right atrium of the heart? superior vena cava, inferior vena cava, & coronary sinus
What great vessel of the heart has the thickest wall? Aorta
What chamber of the heart has the thickest wall? Left ventricle
What 2 arteries deliver oxygenated blood into the myocardium? right & left coronary arteries
What cardiac conduction area of the heart is know as the "pacemaker" of the heart? Sinoatrial node
What ventricular action is occurring when the atria are contracting? diastolic; ventricle is relaxing
Created by: yulissalira



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