i believe cramp is the word.
when a muscle cramps
A fully contracted muscle that remains in tetanus for a prolonged period can cramp, tear, and pull tendons from their insertions.
The Dartos muscle is within the scrotal septum and scrotal wall, this is the smooth muscle that wrinkles and raises the scrotum when contracted.
Tetany
Yes. If not, the action at the joint will be incomplete and dysfunctional. As a whole, a muscle fiber is either contracted or relaxed (the all-or-none principal).
Spasm
contracted muscle and relaxed muscle whats are the difference? contracted muscle means its very very contracted and relaxed muscle means its very very relaxed
Spasm
It either expands or contracts depending on which way you're bending your elbow.
The Biceps brachii muscle. We just call it the biceps, though. (Pronounced bye-seps) To straighten the arm again, the triceps muscle is contracted - which lies 'underneath' the upper arm.
It is called your diaphragm.
Vasoconstriction!