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23 Cards in this Set
- Front
- Back
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Muscle Belly |
Meaty part of the muscle, contracts, and is vascular |
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Tendons |
Tough, glistening white sinews that attach the meat like region to the bones. |
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Tendons |
Connects muscle to bone, minimally vascular, DRCT (strong in one direction) |
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Attachments |
Origin and insertion |
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Origin |
Fixed end Least proximal mobile |
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Insertion |
Mobile end Most mobile but least stable. Moves toward origin |
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Muscle cells |
Striated skeletal myocyte |
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Twizler through a honey comb, fruit roll up wraps around |
Muscle cells |
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Connective tissue |
Endomysium, perimysium, epimysium, and fascia |
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Endomysium |
(Honey comb) Spaces between, surrounds individual cell |
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Perimysium |
(Fruit roll up) Forms an envelope around a group of muscle cells |
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Epimysium |
Forms outer wrapping around the bondus of fasculi |
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Fascia |
Wraps around a region of muscles around the body |
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Tendon relation to bone |
Epimysium and perimysium become tendon tissue of tendon becomes periosteum of bone. |
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Myofibril |
Protein Crain in muscle cell made of many sacromeres found in striated muscle cells |
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Thick filament |
Molecular motors: Myosin molecules (Myosin head and tail) |
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Thin filament |
Binding sites for molecular motors: Actin molecules Molecular binding sites (where Myosin bonds to actin |
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Troponin-tropomyosin complex |
Blocks the receptor sites on the actin molecule wrap around actin and covers binding sites |
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Sacromere |
The sacromere is the smallest component of a muscle fiber that is capable of contraction. |
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Pneuromuscular junction |
Muscle cell and motor neuron |
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P motor unit |
A neuron and muscle cell |
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Removes ttc from actin |
Calcium |
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Calcium |
Responsible for comtraction |
