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Neuron or nerve cell
- basic unit of nervous sytem
- cell body (with nucleus)
- axon (with myelin sheath and nodes of Ranvier)
- dendrites
- branched terminals
- synapse (terminals - presynaptic and postsynaptic)
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Classification of a neurotransmitter
- synthesis
- storage
- release
- binding
- breakdown
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Peripheral nervous system (PNS)
- somatic nervous system (SNS)
- autonomic nervous system (ANS)
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Somatic nervous system
- regulates body movement through control of skeletal muscles
- produces conscious response to environmental changes
- includes 12 pair of cranial nerves and 31 pair of spinal nerves
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Cranial nerves
- I - Olfactory VII - Facial
- II - Optic VIII - Vestibulocochlear
- III - Oculomotor IX - Glossopharyngeal
- IV - Trochlear X - Vagus
- V - Trigeminal XI - Accessory
- VI - Abducens XII - Hypoglossal
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Cranial nerve V
- Trigeminal
- face - sensory, motor
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Cranial nerve VII
- Facial
- face - expression, memory
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Cranial nerve VIII
- Vestibulocochlear
- hearing and balance
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Cranial nerve IX
- Glossopharyngeal
- tongue and throat
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Cranial nerve X
- Vagus
- parasympathetic and sensory
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Cranial nerve XI
- Accessory
- head, neck & shoulders movement; swallowing
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Cranial nerve XII
- Hypoglossal
- speech, chewing and swallowing
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