1) What does the pulmonary circuit link up a) The heart to the rest of the body b) The heart to the brain c) The heart to the lungs 2) What system makes sure the blood is always enclosed in blood vessels and the heart a) The closed system b) the circulatory system c) the endocrine system 3) what tissue controls the contractions of the heart a) cardiac b) endothelium c) connective 4) what does the septum do within the heart a) open and close valves b) push blood out to the rest of the body c) makes sure the different blood paths don't mix 5) what chambers require force to pump blood a) Atrium b) Ventricles 6) what does Myocardium do a) Oxygenates the blood b) control how thick the walls are of the chambers c) helps the distribute the blood around the body

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