Which one of the following is correct pairing of a body part with the kind of muscle tissue present in it ?

Options

A. Biceps of upper arm - Smooth muscle fibres
B. Abdominal wall - Voluntary smooth muscle
C. Iris - Involuntary smooth muscle
D. Heart wall - Involuntary unstriated muscle

Answer

C

Explanation

Involunary smooth muscles are those muscles that are not under the control of our will and our will and are without any striations (stripes). Iris has involunary smooth muscle. Biceps of upper arm have striated muscle fibres and abdominal wall has involuntary smooth muscles. Heart wall has involuntary striated muscle.