APA 2312 Lecture Notes - Lecture 10: Resting Potential, Electrocardiography, Purkinje Fibers
4 Apr 2016
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Cv system composed of the blood, blood vessels, & heart. Carries blood to and from gas exchange surfaces of lungs. Connected to the right atrium by the right atrioventricular (av) valve, or tricuspid valve. Receives blood from the right atria and pumps it through the pulmonary circulaion. Blood from the pulmonary veins is delivered to the let atrium. Blood from the let atrium passes to let ventricle through let atrioventricular (av) valve: a two-cusped bicuspid or mitral valve. Is larger; muscle is thicker and more powerful. Blood leaves let ventricle through aoric valve into ascending aorta. Ascending aorta turns (aoric arch) and becomes descending aorta. Deoxygenated blood goes to lungs, and returns to the let side of the heart to be pumped in the systemic circuit, and transported to the rest of the body. Sequence goes right atria, right ventricle, let atria, let ventricle. Superior vena cava: receives blood from head, neck, upper limbs, and chest.
