BISC 220Lg Lecture Notes - Lecture 14: Cardiac Cycle, Heart, Extracellular Fluid
6 Apr 2017
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Need two separate systems because pressure drops. The right heart must always equal output of left heart. If this does not happen, then the other side may overinflate. The tissues do not remove the majority of oxygen, there are typically reserves. This protein has a certain color so blue is reflected. Arterial blood has high pressure and squirts blood. We do not use all the energy we eat/process. Excess heat is used to maintain body temp. Fish,lizards, etc. do not have two pumps, they have one, so they leech oxygen through gills out of the water. They regulate by actively moving (environmental temp) Difficult for left side to pump blood received from right side. Outputs have to be equal, so if not then the left side will begin to enlarge. Heart muscle has property where they work best at certain length. Length of muscle cells are too long, and the heart cannot pump efficiently.
