Circulatory Changes Flashcards
1
Q
Even before muscles begin to contract in exercise, blood flow to them can be increased through _
A
Brain signals
2
Q
Nerve signals, carried by _ , cause blood vessels in muscle bed to dilate
A
Sympathetic nervous system
3
Q
To keep blood vessels dilated, _ occur
A
Local changes
4
Q
Local changes which keep blood vessels dilated include decreased levels of oxygen and rise in _ and other waste products of respiration in muscle tissue
A
CO2
5
Q
Increased temp, due to excess heat produced by active muscles, also leads to _
A
Blood vessel dilation
