The effect of autonomic nerve stimulation on smooth muscle contractile behavior depends on the types of receptors on the smooth muscle fibers. Which of the following best describes the effects of acetylcholine and norepinephrine on various types of smooth muscle? $\begin{array}{ll}
\underline{\text { A. Acetylcholine} } &\underline{ \text { Norepinephrine }} \
\text { B. Contraction only } & \text { Relaxation or contraction } \
\text { C. Contraction only } & \text { Relaxation only } \
\text { D. Relaxation only } & \text { Contraction only } \
\text { E. Relaxation only } & \text { Relaxation only } \
\text { F. Relaxation or contraction } & \text { Contraction only } \
\text { G. Relaxation or contraction } & \text { Relaxation or contraction }
\end{array}$

Question

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The Answer is F

The Effect of Autonomic Nerve Stimulation on Smooth Muscle Contractile