Ch. 9, shuffle before use...BH
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| 3 Types of muscle | smooth, cardiac, skeletal
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| What is a Muscle Fiber | a single muscle cell
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| What is Endomysium | it coats the muscle fiber, help give it support
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| What are Fascicles | groups of muscle fibers
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| What is the Perimysium | outer layer that wraps around Fascicles
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| What is Epimysium | A tissue that wraps groups of Fascicles together
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| Sacrolemma | like plasma membrane for muscle fibers
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| Sarcoplasm | like the cytoplasm for muscle fibers
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| Sarcoplasmic Reticulum | Where calcium is stored
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| Consists of thick Filaments (myosin) and thin Filaments (actin) | Myofilaments
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| What is required for muscles to move? | ATP (energy)
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| The connection between a motor nueron and a muscle fiber is called | a nueromuscular junction
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| When an impulse reaches the end of a motor neuron, it causes the release of | acetylcholine (ACh)
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| ACh is known as a | neurotransmitter
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| Continuous state of partial muscle contraction is called | Muscle tone
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| What causes muscle tone? | posture, standing, holding your head up
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| What is a motor unit? | A neuron and all the fibers it stimulates.
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| What factors affect muscle Contraction? | Frequency of stimuli, strength of nerve signals, and type of contraction.
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| Isometric contraction | muscle length does not change
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| isotonic contraction | lifting and changing muscle length
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| prime mover | The muscle that triggers a movement
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| end of muscle that attaches to more stable bone | origin
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| end of muscle that attaches to more freely moving bone | insertion
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| muscle that assist the prime movers | synergists
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| balances the use of a muscle | antagonists
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