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Subject :NSO    Class : Class 5

Identify the incorrect statement.

AInvoluntary muscles are controlled by brain and spinal cord
BTendons attach muscles to bones.
CCardiac muscles are involuntary muscles.
DVoluntary muscles in arms and legs are smooth muscles.

Even Answer A is incorrect as Involuntary muscles are not controlled by brain.What is the meaning of smooth muscles. This is a very confusing question.

Ans 1:

Class : Class 4

Ans 2:

Class : Class 3

Ans 3:

Class : Class 10
Option A says involuntary muscles are controlled by brain. It is correct as medulla controls all our involuntary actions. Option B and C are correct as the cardiac muscles are also called as smooth muscles, so statement d is incorrect as the muscles present in our arms and legs are called skeletal or voluntary muscles

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