Question

Difference between voluntary and involuntary muscles is
A. Voluntary muscle can be moved by conscious will, involuntary muscles function on their own.
B. Voluntary muscles-muscles of limbs or skeletal muscles, involuntary muscles-cardiac muscles and smooth muscles.
C. Both A and B.
D. None of the above.

Answer 1

Hint: The movement of involuntary muscles is not under the conscious control of the brain but stimulated by the autonomic nervous system. These muscles include smooth muscles and cardiac muscles.

Complete answer:
The muscular system is made up of specialized cells known as muscle fibres that help in the movement of the body, muscle contraction, maintains body posture, and so on. They attached to bones, blood vessels and other internal organs of our body that are mainly composed of skeletal muscles, tissue, tendons, and nerves
The difference between voluntary and involuntary muscles –

Voluntary muscles	Involuntary muscles
Voluntary muscles work according to the desire or under conscious control.	Involuntary muscles work under the control of the autonomous nervous system of the body.
voluntary muscles are multinucleated and are located towards the periphery of the cell.	Involuntary muscles are uninucleated and located towards the centre of cells.
Theses muscles involved in locomotion and movement of body parts.	These muscles help the organs that performing automatic movements like urogenital tracts, alimentary tracts, respiratory tracts, ducts of glands, blood vessels, ciliary muscles.
They require high energy.	The requirement for energy is low.
The muscles are long, unbranched, and cylindrical in shape.	These muscles are small and spindle-shaped.
They exhibit rapid and powerful contractions.	They exhibit slow and rhythmic contractions.
Voluntary muscles include skeletal muscles	Involuntary muscles include smooth muscles and cardiac muscles.

So, the correct answer is ‘Both A and B’.
Note: In cardiac muscles, self- exciting muscle fibres form ″pacemakers″ that initiate spontaneous nerve impulses for autorhythmic contraction. These pacemakers can be influenced by the autonomic nervous system and hormones. The ear comprises the smallest muscles in the body along with the smallest bones. These muscles connect the eardrum to the inner ear together. The gluteus maximus is the body’s largest muscle. It is found in the hips that help humans to maintain an upright posture.