The rate at which blood flows through the human body changes in response to many factors. Which statement describes one of these
factors and its effect on blood flow? A
A high viscosity of blood causes an increased resistance in the blood vessels and leads to slow blood flow.
B
A low blood pH decreases the rate of diffusion through the blood vessels and leads to slow blood flow.
C
The changing of the shape of red blood cells to a crescent shape decreases resistance and lead to a faster blood flow.
D
The narrowing of blood vessels increases pressure and leads to a faster blood flow.
