Peripheral Nervous System

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Peripheral Nervous System
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Nerve Structure
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Spinal Nerves

• 31 pair
• Dorsal root - sensory info from receptors
• Ventral roots motor neurons to muscles and
  glands
• Cauda equina

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Cranial Nerves

• 12 pair
• Connect to brain
• Pass through foramina in skull

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Olfactory Nerve
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• Optic vision
• Oculomotor eye muscles (including iris)
• Trochlear oblique eye muscles

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• Trigeminal facial sensation, chewing muscles

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Abducens Nerve
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• Facial facial muscles, tears, saliva, taste

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Vestibulocochlear
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Glossopharyngeal taste buds, swallowing
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• Vagus
• Throat, heart, lungs, stomach, etc. sensation
• Swallowing, control of heart rate, peristalsis

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Accessory accessory to vagus, trapezius,
sternocleidomastoid
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Hypoglossal tongue muscles