BIOL 142 Chapter Notes - Chapter 19-20: Elastin, Endoplasmic Reticulum, Vascular Resistance
9 Jul 2018
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Document Summary
Includes all events associated with the blood flow through the heart during one complete heartbeat - atrial systole and diastole followed by ventricular systole and diastole. These mechanical events always follow the electrical events seen in the ecg. Cardiac cycle the amount of blood pumped out by each ventricle in 1 minute. It is the product of heart rate (hr) and stroke volume. Cardiac output (co) the volume of blood pumped out by one ventricle with each beat. In general, stroke volume correlates with the force of ventricular contraction. Cardiac reserve is the difference between resting and maximal co. In nonathletic people, cardiac reserve is typically four to five times resting co (20-25 l/minute), but. Co in trained athletes during competition may reach 35 l/min (seven times resting co). The amount of blood that collects in a ventricle during diastole. The edv, determined by how long ventricular diastole lasts and by venous pressure, is normally about 120 ml.
