THE VASCULAR SHUNT MECHANISM
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At rest only about 15% of
is supplied to the
.
The remaining cardiac output (85%) supplies the bodies
.
On exercise the working muscles need more
so more of the
cardiac output must be
to the muscles.
As exercise intensity increases the cardiac output directed to the working muscles
.
The blood supply to other organs is
except to the
where the blood supply is maintained.
Blood supply to the skin is increased during light exercise to lower
.
This process of redistributing cardiac output is called the
Small arteries (
the muscles
) and
.
sphincters in
(get wider). This allows more blood to flow
through.
The arterioles and pre capillary sphincters supplying organs
narrower) which
the blood flow to organs.
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(get