The frowning action.
The biceps muscle relaxes!!!!!=)
concentric
"Caleotidomastusidialis" element maskes the muscles contract.
Myosin and Actin
A living muscle needs oxygen in the blood and muscle elasticity to contract and move.
Smooth muscle cells contract in response to fluid flow.
Please make your question clearer and resubmit. All muscle fibers contract. What do you mean by constriction?
it is tiny muscle fibers that contract and expand the muscle
No, as the muscle is dead (it doesn't contract like while the muscle is still alive either). However, it will contract if you give it an electrical "jump."
The muscle tissue's main function is to contract.
Somatic type of nerves stimulate the muscle cells to contract.