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the proximal attachment, the least movable and closest to the midline; the anchor.
where tension is developed in the muscle but there is no appreciable change that occurs in the joint angle.
opposite the prime mover in action.
it produces a force which carries out an action resulting in joint movement.
muscle develops tension as it shortens and it develops enough force to
overcome resistance. It causes a movement against gravity so it is a
positive action (pulling down)
contract to assist the prime mover. They are stabilizers.
Concentric and eccentric
the distal attachment, the most movable and farthest from the midline; performs the movement.
muscle lengthes under tension and lessens intention to control the
descent of resistance, it is negative muscle action (pushing up).
highly organized systems of contractile tissues encapsulated in fascia that work together to produce movement in a joint.
Abduction of the scapula (moving laterally)
Adduction of the scapula (moving medially)
Isometric and Isotonic
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