In anatomy, what are the following:?

Question

Prime mover.

Insertion.

Origin.

Agonist.

Antagonist

Have you got any examples of each? if so thanks

Answer 1

Interactions of Skeletal Muscles in the Body

muscles usually work in groups

usually arranged in antagonistic pairs

ex: flexor-extensor, abductor adductor, etc.

Prime Mover (=agonist): the principle muscle that causes a movement

ex: biceps brachii, flexion of forearm

Antagonist: the principle muscle that causes the opposite movement

ex: triceps brachii

Synergists: muscles that assist the prime mover

ex: extensor carpi (wrist) muscles are synergists for the flexor digitorum muscles when you clench your fist

Fixators: synergists that stabilize the origin of a prime over

ex: several back muscles that stabilize scapula when the deltoid flexes the arm

origin: the attachment of the muscle to the bone that remains stationary

insertion: the attachment of the muscle to the bone that moves

belly: the fleshy part of the muscle between the tendons of origin and/or insertion