bbb310lecture4

Bbb310lecture4 - Introduction to Neuroscience Spinal Cord Collects Sensory Input from Body Mediates Reflexes for Body Projects Sensory information

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Spinal Cord Collects Sensory Input from Body Mediates Reflexes for Body Projects Sensory information to Brain Receives Commands from Brain Dispenses Motor Commands to Body Introduction to Neuroscience
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[email protected] 2 Spinal Cord Functions-1 Collects Somatosensory input and segregates it Does this on the basis of submodalities So pain information goes to particular parts of the dorsal horn Muscle length information goes to different areas of dorsal horn and ventral horn Likewise, light touch mediated by hair follicles goes to a different set of sites within spinal cord gray. etc.
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[email protected] 3 Spinal Cord Functions-2 Provides intrinsic connections for spinal reflexes Reflexes are stereotypical behavior and reproducible constantly (short of muscle fatigue) Behavioral unit of the nervous system? An automatic (not necessarily ANS) motor response to a sensory stimulus You don t necessarily control it or have conscious perception of it reflexes underlie activity such as standing, stepping, running (somatic function) and peristalsis (visceral function), blood pressure, etc.
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[email protected] 4 Spinal Cord Functions-3 Provides route for ascending pathways carrying sensory information to the brain Pathways to the cerebellum: For Unconscious proprioception: used for refining and smoothing out motor function dorsal spinocerebellar tract ventral spinocerebellar tract cuneocerebellar tract Pathways to neocortex:
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This note was uploaded on 11/24/2011 for the course BIOLOGY 310 taught by Professor Mueller during the Fall '11 term at Drexel.

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Bbb310lecture4 - Introduction to Neuroscience Spinal Cord Collects Sensory Input from Body Mediates Reflexes for Body Projects Sensory information

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