BIOL-2230 Lecture Notes - Lecture 9: Pacemaker Potential, Stroke Volume, Cardiac Output
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15 Feb 2017
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All blood coming from heart muscle itself goes into coronary sinus. Right and left connect to pulmonary trunk then to atrium. Only veins that carry oxygen rich blood, all others carry oxygen poor. Carries (cid:271)lood a(cid:449)ay fro(cid:373) the heart"s right ventricle to the lungs. Only artery that carries oxygen poor blood, all others carry oxygen rich blood. Dista(cid:374)(cid:272)e (cid:449)e ha(cid:448)e to pu(cid:373)p to get to the lu(cid:374)gs is(cid:374)"t (cid:448)ery far to pump blood. Heart muscle is living tissue so it needs a blood supply. Do(cid:374)"t (cid:374)eed to k(cid:374)o(cid:449) the (cid:374)a(cid:373)es of all the i(cid:374)di(cid:448)idual (cid:448)ei(cid:374)s. Blood pressure builds up until difference is so strong blood is pushed through the valve. Attach the valves to the wall of the ventricle. Papillary muscles contract to hold valve in place and prevent it from turning inside out attach to papillary muscles in wall of ventricle between the atria and ventricle. Between ventricles and the arteries that are carrying blood away from the heart.
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