The frowning action.
The biceps muscle relaxes!!!!!=)
concentric
"Caleotidomastusidialis" element maskes the muscles contract.
Myosin and Actin
All types of Muscle tissue contract... This includes Skeletal and Smooth muscle tissue.
A living muscle needs oxygen in the blood and muscle elasticity to contract and move.
A homograph is a word with the same spelling as another word, but with a different meaning and possibly a different pronunciation. So the homograph for contract is contract. A contract (CON-tract) is an agreement between two or more people to perform some kind of specified work. To contract (con-TRACT) has several meanings: to contract a muscle (to make the muscle tense); to contract a disease (to get or acquire the disease); to contract a word (to shorten the word or make a contraction of it.)
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."