Cardiac Output

HideShow resource information
  • Created by: Ashley
  • Created on: 21-03-11 12:24

Cardiac output:

The volume of blood pumped by the heart in one minute is the caridac output. this increases during exercise.
At rest= 5 dm3
Trained athlete during maximum effort= 30 dm3.

Cardiac output depends on the volume of blood ejected from the left ventricle (the stroke volume) and the heart rate:

Cariac output= stroke volume x heart rate.

Stroke Volume: The stroke volume of blood pumped out of the left ventricle each time the ventricle contracts measured in cm3. for most adults at rest this is about 50-90cm3 which is pumped into each of the pulmonary artery and the aorta when the venricles contract.

The heart draws Blood into the atria as it relaxes


No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Human, animal and plant physiology resources »