22. Which of the following muscles is under voluntarycontrol?A) uterusB) intestineC) heartD) biceps
Question
22. Which of the following muscles is under voluntary control?
A) uterus
B) intestine
C) heart
D) biceps
Solution
D) Biceps
Explanation:
Voluntary muscles are those that we can control. They are also known as skeletal muscles because most of them are attached to the bones. They help in all the movements of the body.
Option D, the biceps, is a muscle that we can control. We can decide when to contract (shorten) and relax (lengthen) it. For example, we can voluntarily choose to lift a book, in which case our biceps contract.
On the other hand, the muscles in the uterus (option A), intestine (option B), and heart (option C) are involuntary muscles. They are controlled automatically by our nervous system without us having to think about it. For example, we cannot choose to stop our heart from beating.
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