BIOL 4160 Study Guide - Quiz Guide: Adenylyl Cyclase, Heart Valve, Cardiac Output
Document Summary
All 4 are not all open at same time but all 4 can close at same time. Esv- more contraction, more blood out: less contraction, more blood remaining in. Pressure volume changes for single cycle: fill with blood, increase in blood volume, but not in pressure, edv (amount available to pump)- av valves close, pressure increases, aortic valve opens . Makes sounds bc normal blood flow doesn"t make sounds. Abnormal valves don"t open all the way or are leaky when closed. G protein closes ca channel and open k channel (hyperpolarization)- action potential frequency decreased. Protein kinase leave l type ca channels open longer. Phosphorylates myosin and increases speed of atp . Increases activity of ca atpase graph (increase speed of contraction, happens faster, greater tension, relaxes quicker) Increasing pressure to vein, increase blood that returns to heart. Change length- will increase amount of blood that can fill ventricle and stroke volume.
