BIO-202: Human Anatomy and Physiology II Week 5.

BIO-202: Human Anatomy and Physiology II Week 5.

 

one full beating of the heart is called a cardiac cycle

chamber systole contraction (pressure going up)

Chamber diastole relaxation (pressure going down)

All chambers are quiet and relaxing.

A quick rundown of the cardiac cycle’s stages
1. Ventricular Filtration (quiescent period)
a. atrial systole, b. passive filling

2. Isovolumetric Ventricular Contraction

3. Ejection of Ventricular Fluid

4. Isovolumetric Ventricular Relaxation

1. Ventricular Filtration
Quick filling, diastasis, and atrial systole are all symptoms of rapid filling.

Conclusion-diastolic volume (EDV) (Max Full) of blood in each ventricle at the end of diastole

Stroke volume (SV) is the quantity of blood that the heart pumps out with each contraction. (EDV-ESV)

End-systolic volume (SV) is the quantity of blood remaining in the ventricle following contraction.

SV/EDV = ejection fraction This will give us a percentage of the amount of blood we sent out.

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