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Head and neck anatomy > Branches of cranial nerves > Flashcards

Branches of cranial nerves Flashcards

1
Q

What route does the olfactory nerve take [I]?

A

From olfactory receptors in nasal cavity –> cribriform plate foramina –> olfactory bulb

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2
Q

What route does the optic nerve take [II]?

A

Retina –> optic nerve –> Optic canal –> Optic chiasm

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3
Q

What route does the oculomotor nerve take [III]?

A

Midbrain –> cavernous sinus –> superior orbital fissure –> Orbit

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4
Q

What route does the trochlear nerve take [IV]?

A

Posterior of midbrain –> Cavernous sinus –> Superior orbital fissure –> superior oblique muscle

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5
Q

What route does the trigeminal nerve take [V]?

A

Pons –> trigeminal ganglion –> V1, V2, V3

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6
Q

What route does the Ophthalmic division of trigeminal nerve take [V1]?

A

Trigeminal ganglion –> Superior orbital fissure –> Orbit and forehead region

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7
Q

What route does the maxillary division of trigeminal nerve take [V2]?

A

Trigeminal ganglion –> infra-orbital foramen

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8
Q

What route does the mandibular division of trigeminal nerve take [V3]?

A

Trigeminal ganglion –> Mental foramen

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9
Q

What route does the abducens nerve take [VI]?

A

Pons –> cavernous sinus –> superior orbital fissure –> lateral rectus

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10
Q

What route does the facial nerve proper take [VII]?

A

Pons –> internal acoustic meatus –> Facial canal –> stylomastoid foramen –> parotid gland

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11
Q

What route does the Chorda tympani nerve take [VII]?

A

Pons –> IAM –> Tympanic membrane –> Petrotympanic fossa –> Travels with lingual branch of V3

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12
Q

What route does the Greater petrosal nerve take [VII]?

A

IAM –> Hitchhikes with V2 and V1 to lacrimal gland

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13
Q

What route does the glossopharyngeal nerve take [IX]?

A

Medulla –> jugular foramen

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14
Q

What route does the vagus nerve take [X]?

A

Medulla –> jugular foramen

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15
Q

What route does the spinal accessory nerve take [XI]?

A

Cervical spinal cord –> Foramen magnum –> Back down through jugular foramen

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16
Q

What route does the hypoglossal nerve take [XII]?

A

Medulla –> Hypoglossal canal

17
Q

What route does the hypoglossal nerve take [XII]?

A

Medulla –> Hypoglossal canal

18
Q

Give the branches of the oculomotor nerve (3)

A

Superior branch
Inferior branch
Oculomotor root to ciliary ganglion

19
Q

Give the branches of the trigeminal nerve (5)

A 
Sensory root
Motor root
Ophthalmic 
Maxillary
Mandibular
20
Q

Give the branches of the Ophthalmic division of trigeminal nerve (16)

A 
Tentorial
Lacrimal
Frontal 
- Supra-orbital
- Supratrochlear
Nasociliary
- Anterior ethmoidal --> external nasal
- Long ciliary
- Posterior ethmoidal
- Anterior ethmoidal (lateral and medial internal nasal, external nasal)
- Infratrochlear (palpebral)
21
Q

Give the branches of the Maxillary division of trigeminal nerve (17)

A 
Meningeal
Ganglionic branches (to pterygopalatine ganglion)
- Orbital
- Nasal 
- Pharyngeal
Greater palatine
- Posterior inferior nasal
Lesser palatine 
Zygomatic 
- Zygomaticotemporal
- Zygomaticofacial
Infra-orbital
- Superior alveolar
- Inferior palpebral
- External nasal
- Internal nasal
- Superior labial
22
Q

Give the branches of the mandibular division of trigeminal nerve (24)

A 
Meningeal
Masseteric
Deep temporal
Nerve to lateral pterygoid
Nerve to medial Pterygoid
- Nerve to tensor veli palatini and tensor tympani via otic ganglion
Buccal
Auriculotemporal
- Nerve to EAM
- Tympanic membrane
- Communicating branches with facial nerve
- Anterior auricular 
- Superficial temporal
Lingual
- Communicating with hypoglossal nerve 
- Communicating with Chorda tympani nerve
- Sublingual
- Lingual
- Ganglionic branches to submandibular ganglion
Inferior alveolar
- Mylohyoid 
- Inferior dental plexus
- Mental (inferior labial)
23
Q

Give the branches of the facial nerve (16)

A 
Greater petrosal
Nerve to stapedius
Chorda tympani
Communicating branch with tympanic plexus 
Communicating branch with vagus nerve
Posterior auricular
- Occipital
- Auricular
- To digastric
- To stylohyoid 
- Communicating with glossopharyngeal
Parotid plexus 
- Temporal
- Zygomatic
- Buccal
- Marginal mandibular
- Cervical
24
Q

Give the branches of the vestibulocochlear nerve (2)

A

Cochlear

Vestibular

25
Q

Give the branches of the Glossopharyngeal nerve (9)

A 
Tympanic
- Tubal
- Caroticotympanic
- Lesser petrosal
Carotid sinus
Pharyngeal
Muscular 
Tonsillar
Lingual
26
Q

Give the branches of the vagus nerve (22)

A 
Meningeal
Auricular
Pharyngeal
Superior cervical cardiac
Carotid body
Superior laryngeal
- Internal laryngeal
- External laryngeal
Inferior cervical cardiac
Recurrent laryngeal
- Tracheal 
- Oesophageal 
- Inferior laryngeal 
Thoracic cardiac
Bronchial
Oesophageal plexus
Anterior vagal trunk
- Gastric 
- Hepatic
Posterior vagal trunk
- Coeliac
- Gastric
27
Q

Give the branches of the Accessory nerve (2)

A

Internal ramus

External ramus

28
Q

Give the branches of the hypoglossal nerve (2)

A

Lingual

Muscular

29
Q

Give the cervical plexus branches and their spinal roots (7)

A 
Lesser occipital, C2
Great auricular, C2,C3 
Transverse cervical, C2, C3
Supraclavicular, C3, C4
Phrenic, C3, C4 and C5
Communicating
Muscular, C1, C2 and C3

Head and neck anatomy (7 decks)

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