Local Spinal Cord

Local Spinal Cord - Somatosensory Local Spinal Cord and...

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Somatosensory Local Spinal Cord and Brainstem Circuits * Lower motor neurons send their axons out of the brainstem to innervate muscles of the head and neck and to innervate muscles of the body. * Local circuit neurons receive sensory inputs as well as descending projections from higher centers and provide the coordination between different muscle groups essential for organized movement * they are the major source of synaptic input to the lower motor neurons. Local Spinal Cord and Brainstem Circuits Cerebellum * detects motor error which are differences between an intended movement and the movement actually performed, and provides input to upper motor neurons. Basal Ganglia * suppress unwanted movement and primes upper motor neuron circuits for movement initiation. DESCENDING MODULATORY PATHWAYS (UPPER MOTOR NEURONS) Upper motor neurons influence the spinal cord by two routes: 1) direct projections to the spinal cord (ventral corticospinal tract; lateral corticospinal tract)
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Local Spinal Cord - Somatosensory Local Spinal Cord and...

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