Somatic Motor System

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104 Terms

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What do the motor neurons consist of?

  • Spinal nerves — anterior horn of spinal cord. These are located in the brain and spinal cord and send signals to the lower motor neurons.

  • Cranial nerves — motor nuclei in brainstem. These are found in the spinal cord or brainstem and directly connect to the muscles to cause movement.

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Motor neurons are the nerve cells responsible for carrying signals from the brain and spinal cord to ____.

muscles

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Motor neurons are the nerve cells responsible for carrying signals from the brain and spinal cord to muscles. They are part of the somatic nervous system, which controls _____ movements.

voluntary

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What are motor control centers?

These are various regions of the brain that help plan, initiate, and control voluntary movements. These are motor areas of the:

  • Cerebral cortex

  • Basal nuclei

  • Cerebellum

  • Brainstem centers

  • Spinal cord

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The motor system uses specific pathways to transmit signals from the brain to the muscles. These pathways include:

  • Corticospinal and corticobulbar tracts

  • Medial pathways and lateral pathways 

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Somatic motor neurons _______ skeletal muscles

innervate

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