It is most definitely involuntary. You do not have to make your stomach contract every time you eat something.
The muscles used for speech, chewing and swallowing are in a sense both voluntary and involuntary muscles for we use them both consciously and reflexly. However, the term voluntary muscle usually refers to the striated skeletal muscles as opposed to the smooth muscles of the interior organs (like the stomach or intestines).
skeletal muscles are voluntary muscles.
involuntary muscles can't control consciously, but voluntary muscles can.
Smooth muscles are involuntary, as are cardiac muscles. Only skeletal muscles are voluntary.
Heart muscles are involuntary.
voluntary, you control what it does.
The brainstem controls the involuntary muscles and the cerebellum controls the voluntary muscles.
Voluntary
both voluntary and involuntary why voluntary? because we can flap our eye lids as per our wish. why involuntary? because if anything is coming straight to our eye our eyes automatically get closed.
Voluntary muscles are what you have control over. Like your skeletal muscle are usually voluntary. Involuntary muscles are what you have no control of. Like your smooth and cardiac muscles you have no control of. The difference between voluntary and involuntary muscles are voluntary muscles you have control of and involuntary you have no control of. Hope this answered your question.
They are involuntary muscles.