You have no control over it, and do not tell your body to do it, therefore it is involuntary, just like you don't tell your heart to beat, it just does it.
Gronk
neck muscle is voluntary muscle i think this is correct
Involuntary muscles are not under you conscious control they are responsible for essential activities such as breathing and digesting food. Voluntary muscles are under your conscious control smiling, turning a page in a book are controlled by voluntary muscles.
Smooth muscles are involuntary, as are cardiac muscles. Only skeletal muscles are voluntary.
Involuntary,as is the smooth muscle.
Voluntary
The muscle in the human body that is both voluntary and involuntary is the diaphragm.
voluntary
They are involuntary muscles.
They are involuntary muscles.
the heart is and involuntary muscle because you cannot contract the muscle.
Voluntary :)