Set: Module 5 Vocabulary

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All 11 Terms

Term Definition
Sarcomere The repeating unit of a myofibril.
Neuron The functional unit of the nervous system, a nerve cell.
Synapse The interface between a nerve cell and another cell.
Neurotransmitter A chemical released by a neuron. This chemical travels across the synaptic cleft, allowing the neuron to communicate with another cell.
One motor neuron and all the muscle fibers it innervates. Motor Unit
All-or-None Law of Skeletal Muscle Contraction An individual muscle fiber contracts with equal force in response to each action potential.
Subthreshold Stimulus A stimulus too small to create an action potential in a neuron.
Threshold Stimulus A stimulus strong enough to create one action potential in a neuron.
Submaximal Stimuli Stimuli of increasing strength that create more action potentials along more neurons.
Maximal Stimulus A stimulus which is strong enough to create action potentials in all the motor neurons innervating a whole muscle.
Muscle Tone The state of partial contraction in a muscle, even when the muscle is not being used.
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Terms 11
Creator aslanismyhero
Created October 29, 2007
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aslanismyhero : Changed Motor Unit → One motor neuron and all the muscle fiber it innervates. to One motor neuron and all the muscle fibers it innervates. → Motor Unit
Last Message: 9 months ago

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  1. aslanismyhero - 25 scores

Most Missed Words

  1. Threshold Stimulus → A stimulus strong enough to create one action potential in a neuron. - 2 misses
  2. Submaximal Stimuli → Stimuli of increasing strength that create more action potentials along more neurons. - 2 misses
  3. Muscle Tone → The state of partial contraction in a muscle, even when the muscle is not being used. - 2 misses
  4. One motor neuron and all the muscle fibers it innervates. → Motor Unit - 1 miss
  5. All-or-None Law of Skeletal Muscle Contraction → An individual muscle fiber contracts with equal force in response to each action potential. - 1 miss
  6. Subthreshold Stimulus → A stimulus too small to create an action potential in a neuron. - 1 miss
  7. Maximal Stimulus → A stimulus which is strong enough to create action potentials in all the motor neurons innervating a whole muscle. - 1 miss