2011 AIPMT-MAINS Locomotion and MovementTypes of muscle Easy Question 1 of 2 in Types of muscle

The type of muscles present in our

A Thigh are striated and voluntary
B Upper arm are smooth muscle fibres fusiform in shape
C Heart are involuntary and unstriated smooth muscles
D Intestine are striated and involuntary

The answer is A.

Solution

Muscles of the limbs, such as those of the thigh and upper arm, are skeletal muscles: they are attached to bones, have a striped appearance (striated) and are under the control of the will (voluntary).
So 'thigh muscles are striated and voluntary' is correct, and the upper arm does not have smooth muscle.
Heart muscle is cardiac muscle: it is involuntary but striated, not unstriated.
Intestinal muscle is visceral (smooth) muscle: it is unstriated and involuntary, with spindle-shaped (fusiform) fibres.
Hence the correct statement is that the muscles of the thigh are striated and voluntary.

Concept Skeletal, visceral and cardiac muscles

Types of muscle in past papers

2 questions from this chapter have appeared across 2 exam years.