Question

Differentiate the following activities on the basis of (a) voluntary and (b) involuntary muscles.
(i) Jumping
(ii) Pumping of heart
(iii) Writing with hand
(iv) Movement of food in the intestine

• A. (i) $\to$ (a), (ii) $\to$ (b), (iii) $\to$ (a), (iv) $\to$ (b)
• B. (i) $\to$ (b), (ii) $\to$ (a), (iii) $\to$ (b), (iv) $\to$ (a)
• C. (i) $\to$ (a), (ii) $\to$ (a), (iii) $\to$ (b), (iv) $\to$ (b)
• D. (i) $\to$ (b), (ii) $\to$ (b), (iii) $\to$ (a), (iv) $\to$ (a)

Answer 1

Answer: (A)

(i) $\to$ (a), (ii) $\to$ (b), (iii) $\to$ (a), (iv) $\to$ (b)

Voluntary muscles are those muscles that you can control by your own will. Jumping, writing with hands are all voluntary movements. These are performed by skeletal muscle. On the other hand, movements like pumping of the heart, movement of food in the intestine are examples of involuntary movements. They cannot be controlled by our own will. These are performed by involuntary muscles like cardiac muscle and smooth muscle.

So, the correct answer is option A.