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Week 7 – Muscular System (Laboratory Class)
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the muscle shortens. There is a participation of myofilaments. The sliding movement. Example: Bending the knee, lifting weights and smiling.
Isotonic Contractions
muscles do not shorten. Myosin filaments are “spinning their wheels” trying to slide. Example: pushing the palms together in front of u, arms and chest contracting isometrically.
Isometric Contractions
attached to the immovable or less movable bone.
Origin
attached to the movable bone.
Insertion