Perfusion of these organs (especially the latter two) is essential for life, and through autoregulation the body can divert blood (and thus, oxygen) where it is most needed.
Blood volume drops, and the body has to make a choice: divert blood to the skin for cooling or divert it to the muscles for performance.
Gone are the days when the educators of the late 1800's fretted that schoolwork would make women sick, diverting blood from their wombs to their brains.
These hormones cause the vasoconstriction of the kidneys, gastrointestinal tract, and other organs to divert blood to the heart, lungs and brain.
When prey is found, a Suckler will rapidly divert blood to its head, causing a cranial explosion.
The operation diverted blood from a damaged liver to avoid potentially deadly bleeding from that organ.
Not only does heat make you sweat, but it forces your body to divert blood from your muscles to the body surface for cooling, further hindering your performance.
As a result, a person's body begins to hyperventilate to allow more oxygen to enter the bloodstream, divert blood to muscles, and sweat to cool the skin.
Van Gelder saw the backpack which fed oxygen to the man's lungs, and which also removed waste gases by diverting and processing blood through the implanted surgical ports.
It diverts blood from the gut and increases the flow to the muscles, preparing the body for action.