Blood Flow to a Tissue Will Increase If The

Question

Blood flow to a tissue will increase if the
A) level of oxygen at the tissue increases.
B) level of carbon dioxide at the tissue increases.
C) pH rises.
D) vessels constrict.
E) All of the answers are correct.

Accepted Answer

An increase in the level of carbon dioxide at the tissue will lead to an increase in blood flow to the tissue through a process known as vasodilation. This is because an increase in CO2 levels indicates that the tissue is producing more waste and needs more oxygen and blood flow to remove it.

Answer: C 
 When the pH of a tissue rises, it indicates that the tissue is becoming more basic, which can be a sign of increased metabolic activity. This can activate mechanisms such as vasodilation, leading to an increase in blood flow to the tissue to support its increased energy demands.

Therefore, the best choices for this question are B and C.