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Muscular System vocab
| Question | Answer |
|---|---|
| Golden Rules | all muscles cross at least one joint; bulk of the muscles lie proximal to the crossed joint; all muscles have at least 2 attachments:origins & insertions; all muscles can only pull (never push; during contraction, insertion moves toward the origins |
| Antagonist | muscle that opposes a prime mover |
| Membrane skeletal muscle | Muscle fiber: sarcolemma; fascicle: perimysium; muscle body: epimysium |
| Prime mover | muscle responsible for a particular body movement (agonist) |
| Synergists | muscles that assists the action of a prime mover |
| Origin | end of a muscle that attaches to a relatively immovable part |
| Insertion | end of muscle attached to a movable part |
| skeletal muscle composition | myofilament-myofibril-muscle fibers (cell)-fascicle-muscle body |
| Functions of skeletal system | generate heat; produce body movements; stabilize joint; maintain posture |
| Motor Neuron | neuron that transmits impulse from central nervous system to an effector |