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BIO 308: Physiology
Lab 31
12
Physiology
Undergraduate 3
02/21/2016

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Cards

Term
in the systemic (body) circulation, blood pressure is highest in:
Definition
the arteries
Term
blood leaves the arterial system and enters:
Definition
the capillaries
Term
as blood travels through the circulatory system the pressure:
Definition
decreases
Term
arteriole sphincters are made of:
Definition
smooth muscle
Term
a sphincter contracts to decrease the arteriole diameter by 1/2. if all other variables stay the same, this will decrease blood:
Definition
1/16
Term
if the amplitude of the finger pulse signal indicates the amount of blood flowing through the finger, what is the effect of cooling on blood flow through the fingers?
Definition
cooling decreases peripheral blood flow
Term
blood fow can be controlled by 'sphincters', which are bands of smooth muscles around arterioles. what is the effect of cooling on these smooth muscles?
Definition
cooling makes these smooth muscle sphincter contract
Term
when the ice bag is left on the wrist, the peripheral blood flow:
Definition
increases slowly
Term
what happens to blood flow through the finger pulse when the ice bag is removed?
Definition
blood flow quickly increases
Term
what is the effect of removing the ice bag on the arteriole sphincters?
Definition
smooth muscle sphincter relax
Term
a sphincter contracts to decrease the arteriole diameter (or radius) to 1/2. if all of the other variables stay the same, this will:
Definition
decrease blood flow to 1/16
Term
smooth muscle sphincter control blood flow through:
Definition
capillaries
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