Term
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Definition
1)Antagonistic-opposite functions-ROM exerciese, flex and extend.
2)Synergistic-work together to perform a task. All movements depends upon contracting (pulling) the muscle. |
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Term
| Function of the Muscular System |
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Definition
| Move the skeleton and tendons attach to bones |
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Term
| Structures of skeletal muscle- |
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Definition
1)Muscle cell=muscle fiber
2)Most muscles are attached to two bonesto allow for movemnet in different directions.
3)Muscles can only pull, they cannot push. |
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Term
| Relationship of the brain to muscle movement are? |
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Definition
1)Cerebrum-frontal lobe initiates muscle contraction.
2)Cerebellum-coordination of movemnets, blance, and coordination. |
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Term
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Definition
state of slight contraction.
Muscles are always prepared to move, this is also regulated by the cerbellum of the brain.
Muscle fibers need the energy of ATP(adenosine triphosphate)in order to contract. |
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Term
| Tyes of exercise-related to movements |
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Definition
1)Isotonic-muscle contraction results in movement of a bone or joint.
2)Isometric-muscle contraction does not result in movement of a bone or joint. |
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Term
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Definition
| stretch receptors in the muscles allow us to know where the muscles are without looking. |
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Term
| Production of energy for muscle contraction |
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Definition
muscles need a great deal of energy.
1)Direct-ATP stored in the cell-short term energy supply
2)Secondary-creatine phosphate-in muscle fibers breaks down to form ATp. The excess creatinine excreted in the urine by the kidneys.
3)Glycongen-most abundant energy supply-glycogen breaks down to glucose-cell respitation occurs to form large amounts of ATP. The o2(for cell respiration) is supplied by the hemoglobin in the blood. |
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Term
| O2a and production of lactic acid |
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Definition
| Lack of O2during muscle contraction-the glucose will form lactic acid-muscle fatique and decrease performance. |
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Term
| Contraction and relaxation of muscle fiber: |
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Definition
| Polarization, depolarizes, and repolarization. |
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Term
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Definition
fibers are relaxed and ready with a negative(-) charge on the inside.
()Na+ and others (+) on outside K+ and (-) on inside. |
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Term
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Definition
| working phase-acetylcholine is the chemical impulse(from brain) that charges the cell wall and alows Na+ to rush in , and the charge changes. Now it is positive (+) on the inside. The change in charge causes muscle contraction. |
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Term
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Definition
| regroup, restore a (-) Charge. |
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Term
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Definition
1)Zygomatic- temple, under eye, upper lip.
2)masseter- eye to jaw.
3)Sternocliedomastoid- behind the ear, sternum and clavicle. |
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