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Muscular System
| Question | Answer |
|---|---|
| Tendon | connective tissue that surrounds each muscle |
| Aponeuross | fibourous sheets |
| Myofibrils | abundant parallel , thread-like structures. |
| Myosin | Protein that causes muscle contraction. |
| Actin | Protein that shortens muscle fibers. |
| Sacromeres | structural and functional unit of a myofibril. |
| Neurotransmitters | Chemical that an axon end secretes. |
| Motor Neurons | Neuron that conducts impulses. |
| Neuromuscular Junction | Synapse between a motor neuron and a skeletal muscle fiber. |
| Acetylcholine | a type of neurotransmitter |
| sliding filament model | muscles shorten, pulling on muscle ends |
| ATPase | enzymes that transfer the energy. |
| Acetylcholinesterse | Enzymes that catalyze breakdown |
| Creatine phosphate | molecule in muscle that stores energy |
| Myoglobin | Oxygen storing pigment in muscle tissue |
| Lactic Acid Threshold | a shift in metabolism |
| Oxygen Debt | amount of oxygen required by muscle cells |
| Threshold Stimulus | stimulation level that must be reached. |
| Twitch | brief contraction of a muscle fiber followed by relaxation |
| muscle tone | on going contraction of fibers. |
| Isometric | contraction that changes muscle length |
| Levers | mechanical device |
| Origin | end of muscle that attachments to unmovable parts. |
| insertion | end of muscle attached to movable parts |
| Agonist | a muscle that causes an action |
| Synergists | a muscle that assists the action of agonists |
| prime mover | muscle that provides most of the force for body movement |
| antagonist | a muscle that opposes an action |
Created by:
Bri_04
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