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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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sakura7 sakura7
wrote...
13 years ago
If the influence of ____________ nerves were removed from the resting heart, its number of beats per minute would ____________.
A. sympathetic; decrease
B. parasympathetic; increase
C. sympathetic; increase
D. somatic; fall to zero
E. afferent; decrease


The rate of blood flow to a tissue will increase if
A. the level of oxygen in the tissue increases.
B. the level of carbon dioxide in the tissue increases.
C. the pH in the tissue rises.
D. the vessel that supplies blood to it constricts.
E. All of the above are true.
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wrote...
#1
Educator
13 years ago
If the influence of ____________ nerves were removed from the resting heart, its number of beats per minute would ____________.
A. sympathetic; decrease
B. parasympathetic; increase
C. sympathetic; increase
D. somatic; fall to zero
E. afferent; decrease

Resting and exercise HR are controlled by the sympathetic NS. For example, the sympathetic nervous system can accelerate heart rate. Removing it will decelerate it.

The rate of blood flow to a tissue will increase if
A. the level of oxygen in the tissue increases.
B. the level of carbon dioxide in the tissue increases.
C. the pH in the tissue rises.
D. the vessel that supplies blood to it constricts.
E. All of the above are true.

Increaded CO2----->vasodilation of arteries and arterioles
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