NEET 2009 Biology question

Which one of the following is correct pairing of a body part and the kind of muscle tissue that moves it?

(1)Biceps of upper arm : Smooth muscle fibres
(2)Abdominal wall : Smooth muscle
(3)Iris : Involuntary smooth muscleCorrect
(4)Heart wall : Involuntary unstriated muscle

Answer: (3)

Solution

Biceps of the upper arm and the abdominal wall muscles are skeletal (striated, voluntary) muscles, so pairing them with smooth muscle (options 1 and 2) is wrong. The heart wall is made of cardiac muscle, which is striated and

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Question ID VK-090185