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Embed code for: ILO voluntary nervous system
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notes on somatic nervous system
Voluntary Nervous Control
Voluntary nervous control is the Somatic Nervous System that is one of division of PNS (Peripheral Nervous System) associated with moving skeletal muscle.
Spinal nerve (peripheral nerves that carry motor commands and sensory information into the spinal cord)
Cranial nerve (nerves that carry information out of brain stem, this includes information related to smell, sight and hearing).
Associated ganglia (integrate sensory input and motor output, they are thousands in numbers)
Sensory receptors (at skin)
Sensory receptors (e.g at skin) send information
Through dorsal root ganglion of spine
To synapse at inter-neuron
That turn synapse at motor neuron
Project out of the ventral root ganglion
Activates movement of skeletal muscle
Spinal cord _ Anterior Horn Cells
Brain _ Somatic Motor Nuclei
Type of nerves:
Type of nerve fiber:
Afferent neuron _ type A and C
Efferent neuron _ type A
Effects of denervation;
Paralysis or atrophy