Date post: | 10-May-2015 |
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Health & Medicine |
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The Spinal Cord
cranial nerves- 12 pr
spinal nerves- 31 pr
The Spinal CordThe Spinal Cord
ventral root
pia mater
dura mater
arachnoid
grey matter
dorsal root
white matter
spinal nerves
The Spinal CordThe Spinal Cord
spinal cord
spinal nerve
vertebra
Nerve Pathways into the Spinal Cord
Nerve Pathways into the Spinal Cord sensory
pathway
motor pathway
Neuron-To-Neuron TransmissionNeuron-To-Neuron Transmission
synapses
• T3-T12• 11 intercostal nerve• 1 subcostal nerve
Functional Divisions of the Peripheral Nervous System
Afferent Division– Sensory (advances) neuron –
goes toward CNSEfferent Division
– Motor (exits) neuron- leaves CNS– Somatic Nervous System– Autonomic Nervous System
Spinal Reflex Arc
Spinal Reflex Arc
patellar ligament
stretch receptor
motor neuron
sensory neuron
motor neuron
interneuron