During exercise, skeletal muscle can release local factors, such as adenosine, which can relax neighboring vascular smooth muscle and thus promote vasodilation in the exercising muscle
The mechanism by which adenosine promotes relaxation of smooth muscle typically involves:
A. inhibition of K+ channels in the vascular smooth muscle
B. stimulation of InsP3 production in the vascular smooth muscle
C. stimulation of release of endothelin from adjacent endothelial cells
D. stimulation of cAMP production in the vascular smooth muscle
E. activation of voltage-gated Ca++ channels in the vascular smooth muscle
ANS: D
You might also like to view...
Nocturia means urinating:
A) in the morning B) at midnight C) in the afternoon D) at night E) during the day
Answer the following statement(s) true (T) or false (F)
1. Transverse planes divide the body into superior and inferior portions. 2. It is improper in anatomy to combine two systems when describing specific locations (e.g. genitourinary system). 3. Organs are composed of two or more tissue types. 4. Positron emission tomography (PET scan) assesses the metabolic state of a tissue.
The fundus of the uterus is located superiorly.
Answer the following statement true (T) or false (F)
Gas, nutrient, and waste exchange occur between the __________ and the tissues of the body
A. arteries B. veins C. capillaries D. capillaries and veins E. capillaries and arteries