A variety of stimuli can elevate cyclic guanosine monophosphate (cGMP) concentration in smooth muscle,which results in activation of cGMP-dependent signaling pathways in the smooth muscle.This activation typically:
A) Promotes relaxation,partly because of inhibition of myosin phosphatase.
B) Promotes contraction,partly because of decreased endothelin production.
C) Promotes relaxation,partly because of activation of potassium channels .
D) Promotes contraction,partly because of inhibition of InsP3 production.
E) Promotes relaxation,partly because of activation of voltage-gated Ca channels.
Correct Answer:
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Q1: An increase in smooth muscle tension can
Q2: Endogenous agonists such as adenosine and
Q4: The latch property of smooth muscle concerns
Q5: In smooth muscle,actin and myosin filaments:
A)Are organized
Q6: Smooth muscle can contract without a
Q7: During exercise,skeletal muscle can release local factors,such
Q8: A variety of smooth muscle relaxants can
Q9: Decreased cytosolic Ca++ in smooth muscle typically
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