Question

The following table gives examples of the effect of the autonomic nervous system on certain parts of the body. Which entry is INCORRECT?

• A. $\begin{array}{cccc}& \text{Branch of autonomic}\text{Nervous system}& \text{Part of body}\text{in nervated}& \text{Effect produced}\\ & \text{Parasympathetic}& \text{Muscle of heart wall}& \text{Rate of contraction decreased}\end{array}$
• B. $\begin{array}{cccc}& \text{Branch of autonomic}\text{Nervous system}& \text{Part of body}\text{in nervated}& \text{Effect produced}\\ & \text{Sympathetic}& \text{Sweat glands}& \text{Secretion stimulated}\end{array}$
• C. $\begin{array}{cccc}& \text{Branch of autonomic}\text{Nervous system}& \text{Part of body}\text{in nervated}& \text{Effect produced}\\ & \text{Parasympathetic}& \text{Muscle of bronchi}& \text{Relaxation promoted}\end{array}$
• D. $\begin{array}{cccc}& \text{Branch of autonomic}\text{Nervous system}& \text{Part of body}\text{in nervated}& \text{Effect produced}\\ & \text{Sympathetic}& \text{Salivary glands}& \text{Secretion inhibited}\end{array}$

Answer 1

The correct option is C $\begin{array}{cccc}& \text{Branch of autonomic}\text{Nervous system}& \text{Part of body}\text{in nervated}& \text{Effect produced}\\ & \text{Parasympathetic}& \text{Muscle of bronchi}& \text{Relaxation promoted}\end{array}$

The bronchi muscles are associated with contraction not relaxation which is the part of the parasympathetic nervous system. Hence, the correct answer is "c".