Which of the choices below explains why the arterioles are known as resistance vessels?
Their prime function is the exchange of nutrients and wastes between the blood and tissue cells.
The contraction and relaxation of the smooth muscle in their walls can change their diameter.
They distribute blood to various parts of the body.
They contain a large quantity of elastic tissue.
The contraction and relaxation of the smooth muscle in their walls can change their diameter.
You might also like to view...
During menopause, the vaginal wall becomes ________, and hormonal changes lead to ________ risk of heart disease
A. thicker; increased B. thicker; decreased C. thinner; increased D. thinner; decreased
In surgery, a drill bit is clamped in place by a(n) ________________________________________
Fill in the blank(s) with correct word
The pyloric gland area of the stomach antrum
a. secretes gastrin. b. is inhibited when gastric pH falls too low. c. is stimulated by the presence of glucose. d. both secretes gastrin and is inhibited when the gastric pH falls too low. e. all of these answers.
Which disorder describes a condition of too many blood cells?
A. Thrombocytopenia B. Anemia C. Polycythemia D. Hemophilia