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to move spasmodically or convulsively; jerk; jump
The skeletal muscles do have the involuntary muscle because they help it in the contraction process.
An involuntary muscle contraction is called a spasm.
A muscle twitch is an involuntary contraction of a muscle group without conscious effort.
It is called a Tracheospasm
-spasm means involuntary muscle contraction, so blepharospasm, for instance, is involuntary contraction of the eyelid.
Peristalsis
The correct spelling is "cramp" and not "calf". The cramp is the involuntary contraction of the muscle and is usually very painful.
A sudden painful involuntary contraction of a muscle is called a muscle cramp. This can happen due to various reasons such as dehydration, muscle fatigue, or poor blood circulation. Stretching and massaging the affected muscle can help alleviate the discomfort.
The suffix for sudden involuntary contraction of muscle is "-spasm." So, the condition you are referring to in the distal region of the stomach would be called "gastros- (stomach) -spasm."
voluntary
The process is called vasoconstriction. It is when the smooth muscle contracts in the artery wall, causing the lumen to become narrower, which can lead to an increase in blood pressure.