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muscle A&P
| Question | Answer |
|---|---|
| skeletal muscle | movement, posture, joint stability, heat |
| smooth muscle | moves organs and structures |
| cardiac muscle | pumps blood |
| SKELETAL MUSCLE: excitability | receive a stimulus |
| SKELETAL MUSCLE: contractility | shortens |
| SKELETAL MUSCLE: elasticity | ability to stretch |
| SKELETAL MUSCLE: extensibility | ability to reverse from contracting |
| SKELETAL MUSCLE: creep | direction movement of tissue |
| SKELETAL MUSCLE: plastic range | does not return to nature state |
| how is fascia described or defined | bandage - connective tissue |
| what are tendons | cords of dense CT...attach muscle to bone |
| how do tendons attach to bone | Periosteum |
| what is an aponeurosis | flat broad tendon |
| perimysium | surrounds each fascicles |
| endomysium | surrounds each cell |
| epimysium | surronds each muscle belly |
| what is a muscle cell | muscle fiber |
| what is a fascicle | bundle of muscle cells |
| what is sarcomere | part of flesh |
| what is considered thick myofilaments | myosin |
| what is considered thing myofilaments | actin |
| what forms the "corss-bridges" during the sliding mechanism | myosin heads |
| what chemicals/nutrients must be available for the myofilaments to shorten | ATP Calcium Acetylcholine |
| what is the primary neurotransmitter for motor nerve end plate? | acetylcholine |
| what is acetlycholinesterase | breaks down acetylcholine |
| where does the motor neuron communicate with the muscle? | motor end plate |
| the neuron or nervous cell that stimulates a group of muscle fibers that contract a unit is called | motor unit |
| which organization of muscle fibers provide the most strength | Pennate |
| which organization of muscle fibers provide the greatest ROM | Parallel |
| what is the most common lever system | first class |
| fast twitch fibers | a nareobic- few mitrochondira |
| slow twitch fibers | aerobic - more mitrochondria |
| what is the purpose of skeletal muscle tone? | stabilize joint, maintain posture, uncontrolled changes |
| what is isotonic contraction | movement |
| what is an eccentric contraction? | tension in muscle (elongated) |
| what is a concentric contraction? | tension in muscle (shortening) |
| what is a isometric contraction? | without movement |
| joint kinesthetic receptors | monitor joint movement |
| inner ear | space and friction |
| origin | point does not move |
| insertion | point that moves |
| action | what the muscle does |
| agonist | movement (prime mover) |
| antagonists | opposite does not move |
| synergist | helpers |
| sacrolemma | muscle cell membrane |
| sarcoplasmic reticulum | tuber and channels |
| nucleus | the brain of cell |
| muscle fiber | muscle cell |
Created by:
marlenasokana
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