Physiology 3120 Lecture Notes - Lecture 1: Inferior Vena Cava, Heart Valve, Papillary Muscle
12 Jan 2017
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Document Summary
It begins on the 23rd day of fetal development and ends. Heart beats 2. 5 billion times in an average (66 years) life. At rest, it pumps 5l of blood/min. During exercise, it can reach 20 to 40 l/min. Avg heart rate at rest is roughly 70 bpm. You have roughly 160 000km of blood vessels. Every day, 2700 people die of heart disease. Components of the transport system: a central pump the heart, a closed system of blood vessels 2 circulatory systems, the fluid medium, (cid:494)blood(cid:495), through which various substances are transported. Right atrium right ventricle pulmonary artery pulmonary capillaries . Lungs: picks up o2 as it passes through the lungs and drops off some co2, even during maximal exercise, blood will be saturated with o2 while still getting rid of some co2. Lungs pulmonary vein left atrium left ventricle aorta arteries : arteries: take blood away from heart, veins: take blood towards heart.
