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Cardiac Cycle
A. Indian hills Cardiac Cycle
Question | Answer |
---|---|
The contraction of the Right and Left atria pushing blood into the venticles | Atrial Systole |
The period between atrial contractions when the atria are repolarizing | Atrial Dystole |
Refers to the tension in the ventricular wall at the end of diastole. It reflects venous filling pressure that fills the L ventricle during diastole. | Preload |
Contraction of the right and left ventricles pushing blood into the pulmonary arteries and aorta. | Ventricle Systole |
refers to the amount of blood pumped from the left or right ventricle per minute. It is the equal product of stroke volume and HR. | Cardiac Output |
What is normal cardiac output for an adult male? | 4.5-5.0 L/min |
Do women produce slightly more or less blood during CO? | less |
Refers to the amount of blood that returns to the R atrium each minute. | Venous return |
Refers to the volume of blood ejected by each contraction of the left ventricle. | Stroke Volume |
What is the normal range for stroke volume? | 60-80 ml depending on age, sex, and activity |
What can cardiac output increase to with exercise? | 25 L/min |
______ is similar in volume to cardiac output. Because the cardiovascular system is a closed loop_____ ______ must equal cardiac output when averaged over time. | Venous return, venous return |
Refers to the forces that impede the flow of blood out of the heart, primarily the measure in the peripheral vascular, the compliance of the aorta, and the ,ass and viscosity of blood. | Afterload |