SLE221 Lecture Notes - Lecture 3: Chordae Tendineae, Tricuspid Valve, Heart Valve
17 May 2017
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Describe the anatomy of the heart, including its chambers, valves and coronary circulation. Hollow, muscular organ the size of a clenched fist positioned between sternum and vertebrae. Duel pump (2 separate pumps) left and right sides. Devidied into right and left halves and have 4 chambers: atria: upper chmabers which receive blood returing to the heart and transfer it to lower chambers, ventricles: lower chambers which pump blood from the heart. Left ventricle is the thickest as it pumps blood throughout the whole body. Pulmonary circulation: closed loop of vessels carrying blood between heart and lungs. Systemic circulation: circuit of vessels carrying blood between heart and other body systems. Trace the flow of a red blood cell through the pulmonary and systemic circulations. Descibe how the valves in the heart ensure one way flow of blood. When pressure is greater behind the valve it opens, when the pressure is greater in front of the valve it closes.
