Question

Voluntary muscles are found in _______ .
(A) Iris of the eye
(B) Limb
(C) Bronchi of lungs
(D) Alimentary canal

Answer 1

Hint: Muscle is defined as animal tissue by which motion is produced. The meaning of the voluntary is something done by choice or out of the will. The function of these muscles can be controlled by the conscious mind.

Complete answer:
Let’s discuss the question and find the proper answer.
- Iris of the eye: Iris is the ring- shaped flattened membrane that is present at the posterior position of the cornea. Eye color is expressed by the presence of this tissue. The pupillary sphincter muscle also called the iris sphincter muscle is present in the iris.
- Limb: In mammals, legs or arms are generally called limbs. These are used by many animals in the case of locomotion like running, walking, climbing, etc. Skeletal muscles are present in limbs. These are attached to the bones.
- Bronchi of lungs: The airways that are present in the trachea and continue till the lungs are known as bronchi. These help in gaseous exchange in the lungs such as oxygen, carbon dioxide, etc.
- Alimentary canal: Alimentary canal is also known as the gastrointestinal tract. It begins from the mouth and ends at the anus. Several uninucleate muscles are present in alimentary canals.
Hence Option ‘(B) Limb’ is the correct answer.

Note: There is another muscle named as involuntary muscle. These are thin, long, and spindle-shaped. Iris of the eye, bronchi of lungs, and the alimentary canal is the part of involuntary muscle. It helps in digesting foods also.