cranial nerves

Danielle Morley
Mind Map by Danielle Morley, updated 12 months ago
Danielle Morley
Created by Danielle Morley about 6 years ago
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Description

Mind Map on cranial nerves, created by Danielle Morley on 01/11/2014.

Resource summary

cranial nerves
1 CN I: olfactory
1.1 (S) function: smell
1.1.1 origin: olfactory receptor neurons in olfactory mucosa
1.1.1.1 location: cribriform plate of ethmoid bone
2 CN II: optic
2.1 (S) function: vision
2.1.1 origin: retinal ganglion cells
2.1.1.1 location: optic canal
3 CN III: occulomtor
3.1 (M) function: most eye movements, pupillary constriction
3.1.1 origin: midbrain (anterior aspect)
3.1.1.1 location: superior orbital fissure
4 CN IV: trochlear
4.1 (M) function: superior oblique (depresseseye and rotates laterally)
4.1.1 origin: midbrain (dorsal/ posterior aspect)
4.1.1.1 location: superior orbital fissure
5 CN V- trigeminal
5.1 (S+M) function: sensation from face, muscles of mastication
5.1.1 V1: opthalmic
5.1.1.1 (S) function: sensation from forehead, nose
5.1.1.1.1 origin: pons
5.1.1.1.1.1 location: superior orbital fissure
5.1.2 V2: maxillary
5.1.2.1 (S) function: sensation from cheeks, upper lip
5.1.2.1.1 origin: pons
5.1.2.1.1.1 location: foramen rotundum
5.1.3 V3: mandibular
5.1.3.1 (S+M) function: sensation from chin, jaw, mouth, muscles of mastication
5.1.3.1.1 origin: pons
5.1.3.1.1.1 location: foramen ovale
6 CN VI: abducens
6.1 (M) function: lateral rectus (abducts the eye)
6.1.1 origin: pons (nuclei underlying floor of 4th ventricle)
6.1.1.1 location: superior orbital fissure
7 CN VIII: vestibulocochlear
7.1 (S) function: proprieception; acoustic branch: hearing, vestibular branch: equilibrium
7.1.1 origin: CB pontine angle, lateral to CN VII
7.1.1.1 location: internal acoustic canal
8 CN IX: glossopharyngeal
8.1 (S+M) function: taste (posterior 1/3 of tongue), sensation from tonsils, senses carotid BP from carotid arteries and sinus, stylopharyngeus (swallowing, larynx, pharynx), parotid gland secretion (salivary gland back of mouth)
8.1.1 origin: medulla
8.1.1.1 location: jugular foramen
9 CN VII: facial
9.1 (S+M) function: taste (anterior 2/3 of tongue), muscles of facial expression, lacrimal + salivary gland secretion
9.1.1 origin: pons (CB pontine angle) above olive, medial to CN VIII
9.1.1.1 location: runs through acoustic canal, then through facial canal, exiting at stylomastoid foramen
10 CN X: vagus
10.1 (S+M) function: taste (epiglottis), sensation from meninges, pharynx, senses aortic BP at aortic arch, muscles in pharynx and larynx, parasympathetic (ie rest and digest) fibres to heart, lungs, digestive tract
10.1.1 origin: medulla (posterolateral sulcus)
10.1.1.1 location: jugular foramen
11 CN XI: (spinal) accessory
11.1 (M) function: trapezius and sternocleidomastoid (shrug and head movements)
11.1.1 origin: cranial and spinal roots
11.1.1.1 location: jugular foramen
12 CN XII: hypoglossal
12.1 (M) function: tongue muscles (speech articulation and swallowing/bolus formation)
12.1.1 origin: medulla
12.1.1.1 location: hypoglossal canal
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