Muscle Stack
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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| Ability to Shorten | Contractility
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| Respond to Stimulus | Excitability
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| To be strectched | Extensibility
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| Recoil to original Resting length | Elasticity
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| Surrounds Skeletal Muscle by a connective tissue seath | Epimysium
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| outside the Epimysium | Fascia
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| Muscle Fasciculi surrounded by loose connective tissue | Perimysium
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| Each fiber surrounded by a connective tissue seath | Endomysium
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| 2 myofibrils | Actin, Myosin
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| Thin Myofilament | Actin
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| Thick Myofilament | Myosin
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| Formed highly ordered units | Sacromeres
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| Light Band | Z bands
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| Dark bands | A bands
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| Where are the myosin filaments anchored. | M line
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| Charge difference across the membrane | Resting Membrane potential
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| Brief reversal back of the charge | Action Potential
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| Nerve cells that carry action potentials to the skeletal muscle fibers | Motor Nuerons
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| Each branch that connects to the muscle cells form what? | Nueromuscular Junction or Synapse
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| single motor neuron and all its skeletal fibers it innervates | Motor Unit
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| in the center of the sacromere is located | The H-Band
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| The H band is made of | Myosin
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| Enlarged Nerve Terminal | Presynaptic Terminal
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| Space between the presynaptic terminal and the muscle cell | Synaptic Cleft
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| The space between the presynaptic terminal and the muscle fiber | Post-synaptic Terminal
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| Each presynaptic terminal contains | synaptic vesicles
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| Secretes the nuerotransmitter | Aceytlcholine
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| Enzymes | aceytlcholinesterase
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| Occurs as actin and myosin myofilaments slide past one another causing the sacromeres to shorten | Muscle Contraction
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| occurs during contraction | Sliding filament mechanism
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| Contraction of an entire muscle in response to stimulus that causes the action potential in one or more fibers | muscle twitch
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| Muscle fiber wont respond to stimulus until it reaches what? | Threshold
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| Phenomenon | All or none response
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| time between application of a stimulus to a motor neuron | lag phase
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| time of contraction | contraction phase
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| time during which the muscle relaxes | relaxation phase
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| remain contracted without shortening | tetany
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| increase in number of motor units being used | recruitment
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| energy needed for muscle contraction | ATP
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| produced in the Mitochondria | ATP
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| shortlived and unstable | ATP
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| What ATP becomes when stablized | ADP
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| When ATP is used more than what is produced | Muscle Fatigue
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| amount of tension increases in muscles | Isometric
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| length of muscle changes | Isotonic
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| Stationary end of the muscle | Head
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| Contract and fatigue quickly | Fast Twitch
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| Contract and fatigue slowly | slow twitch
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| end of the muscle undergoing the most movement | insertion
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| between origin and insertion | belly
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Created by:
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