Acute responses to exercise

ML of blood pumped out the left ventricle per beat

Beats per minute

The volume of blood the heart pumps through the body in a minute

Air breathed in and out per minute

Amount of inspired and expired air per breath

Breaths per minute

The movement of molecules (O2) from an area of high concentration to an area of low concentration.

Pressure of blood against artery walls

Flow of blood back to right atrium – assisted by venoconstriction

Vasocontriction of arterioles supplying inactive muscles reduces blood flow here and vasodilation of arterioles supplying muscles increases blood flow here