EQN 3050 Lecture Notes - Lecture 14: Pulmonary Vein, Pulmonary Artery, Pulmonary Circulation
9 Mar 2018
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Eqn 3050 - lecture 14 - march 1 2018. How does the horse achieve these huge increases in oxygen uptake: increase cardiac output (~10x, greater contribution by increased ability to carry oxygen. Increased circulating adrenaline in response to initiation and/or anticipation of exercise. Blood vessels: arteries (away from the heart) Take oxygenated blood away from the heart to the rest of the body. Pulmonary arteries are low in oxygen ; bring blood from heart to lungs right ventricle to pulmonary circulation its deoxygenated. Aorta oxygenated blood to systemic circulation from left ventricle: veins (towards heart) Take oxygen depleted blood back to the heart. Vena cava coming to heart from systemic circulation comes into right atrium, goes out pulmonary arteries, gets oxygenated. Pulmonary veins coming back from pulmonary circulation into left atrium: capillaries. Highly responsive to exercise in terms of muscle bre diffusion. Blood pressure: arterial pressure in the systemic circulation, systolic. Approx 33% of cardiac cycle : diastolic.
