Tendon EpimysiumEndomysiurm fbers) Bone Muscle fiber (cel Perimysium Blood Endom

Question

Tendon EpimysiumEndomysiurm fbers) Bone Muscle fiber (cel Perimysium Blood Endomysium (wrapped by vesset perimysium) IV: Muscle Action Be able to identify these terms: attachment of a muscle that remains relatively fixed during muscular contraction : moveable attachment of a muscle. A muscle always contracts when stimulated, and as it shortens the moves toward the Be able to identify these terms: muscle that bears the primary responsibility for effecting a particular : The prime mover. movement. Ex: : muscle that reverses, or opposes, the action of another muscle. Ex. : muscle that aids the action of a prime mover by effecting the same movement or by stabilizing joints across which the prime mover acts to prevent undesirable movements Ex

Explanation / Answer

1. Origin is attachment of muscle which is present more proximal and is less movable.

2. Insertion is the movable attachment of the muscle.

3. Contraction shorten the sarcomere and movea the body part towards the direction of contraction

4. Agonists are the muscles which primarily involved in moving. e. g. Triceps brachii

5.Antagonist are muscle which opposes the other muscle action. e. g. elbow flexor muscles.

6. These are called synergist muscles e. g. Gluteus Maximus, Adductor Magnus, Soleus are synergist in squat muscles.

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