Term
| Define the 4 muscle tissue properties. |
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Definition
EXCITABILITY-can respond to stimulation(nervous system)
CONTRACTILITY- contracts (shortens)
EXTENSIBILITY- can return to original shape, continue to retract
ELASTICITY- contains elastic qualities, returns to original shape |
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Term
| What are the functions of skeletal muscle tissue? |
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Definition
MOVEMENT-pulls on skeleton levers to produce movement
POSTURE-slow twitch muscles produce muscle tone=constant tension
SUPPORT- soft tissue (abdominal organs)
REGULATE- materials enter/exit body
TEMP- heat from MM contraction |
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Term
| Be prepared to identify the CT of muscle (i.e. epi/peri/endomysium). |
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Definition
EPIMYSIUM- upon the muscle belly (Dense CT)
PERIMYSIUM- separates bundles (fascicles) or muscle fibers (Dense CT)
ENDOMYSIUM- separates individual MM fibers (cells) (Delicate CT, allows movement) |
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Term
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Definition
attach muscle to bone
strong cords of CT
Consists of collagen protein fibers
highly elastic |
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Term
| Be prepared to define and label the Neuromuscular junction. |
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Definition
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Term
| What is the hierarchy of muscle organization? |
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Definition
MUSCLE- largest, entire sx
FASCICLES- bundles of MM fibers
MM FIBERS- MM cells
MYOFIBRILS- baby fibers
MYOFILAMENTS- proteins that interact, produce contraction |
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Term
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Definition
| smalles FX and SX unit of MM where contraction occurs |
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Term
| Be prepared to identify and/or draw the various components of a sarcomere. |
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Definition
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Term
| Define the Sliding Filament Theory |
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Definition
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Term
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Definition
motor neuron and the muscle fibers is controls= motor unit
MOTOR NEURONS- neurons that control effectors |
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Term
| How do motor units play a role in muscle control? |
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Definition
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Term
| Define hypertrophy and atrophy of muscle. |
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Definition
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Term
| What are major differences b/w Type I, IIa, and IIb muscle fibers |
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Definition
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Term
| Distibution of muscle fibers |
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Definition
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Term
| What are the 3 types of muscular contraction and the 3 forms of resistance? |
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Definition
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