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Anatomy 205 > Mandibular Nerve > Flashcards

Mandibular Nerve Flashcards

1
Q

Origin

A
  1. Sensory root (large): trigeminal ganglion
  2. Motor root (small): trigeminal nerve (pons)
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2
Q

Course and End

A

Leave skull: through foramen ovale
Unite: just below foramen ovale
Form main trunk: descends 1cm in infratemporal fossa in front of mandible neck
End by dividing into:
1. Anterior division: small mainly motor
2. Posterior division: large mainly sensory

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3
Q

Branches: from trunk

A

Motor:
1. Nerve to medial pterygoid
Sensory:
1.Nerve spinosus

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4
Q

Branches: from anterior division

A

Motor
1. Two deep temporal nerves
2. Nerve to masseter
3. Nerve to lateral pterygoid
Sensory
1. Buccal nerve

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5
Q

Branches: from posterior division

A
  1. Auriculotemporal nerve
  2. Inferior alveolar nerve
  3. Lingual nerve
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6
Q

Auriculotemporal nerve branches

A
  1. Parotid
  2. Articular
  3. Sensory
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7
Q

Inferior alveolar nerve branches

A
  1. Nerve to mylohyoid
  2. Dental branches
  3. Mental nerve
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8
Q

Lingual nerve branches

A
  1. General sensory
  2. Taste sensory
  3. Parasympathetic
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9
Q

Nerve to medial pterygoid supply

A
  1. Medial pterygoid
  2. Tensor palati
  3. Tensor tympani
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10
Q

Nervus spinosus course and supply

A
  1. Enters middle cranial fossa through foramen spinosum.
  2. Supply Dura.
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11
Q

Two deep temporal nerves supply

A

Temporalis muscle

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12
Q

Nerve to masseter muscle course

A

Pass through mandibular notch

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13
Q

Buccal nerve supply

A

Continuation of anterior division
1. Skin covering buccinator muscle
2. Mucosa lining buccinator muscle

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14
Q

Auriculotemporal nerve course

A
  1. Arises by 2 roots around middle meningeal artery
  2. Passes backwards deep to mandible neck
  3. Ascend within parotid behind TMJ
  4. Leaves parotid through its upper end
  5. Cross zygomatic arch to reach scalp
  6. Divide into branches
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15
Q

Parotid nerve supply

A
  1. Sympathetic fibers
  2. Parasympathetic fibers (Otic ganglion)
  3. Sensory fibers
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16
Q

Articular nerve supply

A

TMJ

17
Q

Sensory nerve supply

A
  1. Skin upper 2/3 lateral surface auricle
  2. Posterior 1/2 temple
  3. External auditory meatus
  4. Ear drum
18
Q

Inferior alveolar nerve course

A

Largest branch of posterior division
1. Descends on medial pterygoid behind lingual nerve
2. Enters mandibular foramen
3. Runs in mandibular canal
4. Ends in mental foramen
5. Divide into mental and incisive terminal branches

19
Q

Nerve to mylohyoid course and supply

A

Runs in mylohyoid groove
Supply
1. Mylohyoid
2. Anterior belly of digastric muscle

20
Q

Dental branches course and supply

A

Arises in mandibular canal
1. Lower molars
2. Premolars (inferior alveolar)
3. Lower incisors
4. Canine (incisive branch)
5. Gum
6. Alveolar bone

21
Q

Mental nerve course and supply

A

Comes out of mental foramen
1. Skin of chin
2. Lower lip

22
Q

Lingual nerve course deep to mandible ramus

A
  1. Joined by chorda tympani deep to lateral pterygoid
  2. Descends on medial pterygoid in front of inferior alveolar nerve
23
Q

Lingual nerve course deep to mandible body

A
  1. Passes forward in faint groove below last molar covered by mucosa
24
Q

Lingual nerve course at tongue side

A
  1. Crosses styloglossus then hyoglossus
  2. Suspends submandibular ganglion by 2 roots
  3. Hooks around submandibular duct
  4. Passes forward deep to sublingual gland to reach tongue
25
Q

General sensory supply

A
  1. Anterior 2/3 tongue
  2. Gum
  3. Floor of mouth
  4. Submandibular gland
  5. Sublingual gland
26
Q

Taste sensory supply

A

From chorda tympani
1. Anterior 2/3 tongue

27
Q

Parasympathetic nerve supply

A

From chorda tympani
Relay in submandibular ganglion
1. Submandibular gland
2. Sublingual gland

Anatomy 205 (197 decks)

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