THRC.12 Flashcards

1
Q

CN-V

A

Trigeminal nerve

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2
Q

Summarise trigeminal nerve

A
  • The largest sensory nerve of the head
  • Sensory fibres of the skin
  • Motor fibres to masticatory musculature
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3
Q

The motor fibres of trigeminal nerve originate from…

A

Motor nucleus of the trigeminal nerve

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4
Q

Where is the motor nucleus of the trigeminal nerve located?

A

Metencephalon

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5
Q

Sensory fibres of the trigeminal nerve originate from…

A

Trigeminal ganglion → Sensory trigeminal nuclei

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6
Q

Location of the trigeminal ganglion

A

Petrosal bone

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7
Q

Give the branches of the trigeminal ganglion

A
  • Ophthalmic nerve (V1​)
  • Maxillary nerve (V2)​
  • Mandibular nerve (V3​)​
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8
Q

What is shown?

What do the colours represent?

A

Primary branches of the ophthalmic nerve (CN-V1) (eq)

  • Blue = Sensory
  • Red = Motor
  • Green = Parasympathetic
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9
Q
A

Frontal nerve

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10
Q
A

Lacrimal nerve

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11
Q
A

Ophthalmic nerve (V1)

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12
Q
A

Orbital fissure

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13
Q
A

Nasociliary nerve

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14
Q
A

Ethmoidal foramen

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15
Q
A

Ethmoidal nerve

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16
Q
A

Lamina cribrosa

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17
Q
A

Infratrochlear nerve

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18
Q
A

Ciliary ganglion

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19
Q
A

Pterygopalatine ganglion

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20
Q
A

Major petrosal nerve (VII)

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21
Q

The ophthalmic nerve (V1) shares a sheath with…

A
  • Maxillary nerve (CN-V2)
  • Trochlear nerve (CN-IV)
  • Abducent nerve (CN-VI)
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22
Q
A

Lacrimal gland

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23
Q

Give the branching of the ophthalmic nerve

A
  • Lacrimal nerve
  • Frontal nerve
  • Nasociliary nerve
  • Ethmoidal nerve
  • Infratrochlear nerve
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24
Q

What is shown?

What do the colours represent?

A

Primary branches of the maxillary nerve (CN-V2) (eq)

  • Blue = Sensory
  • Red = Motor
  • Green = Parasympathetic
25
Q
A

Lacrimal gland with lacrimal nerve

26
Q
A

Caudal nasal nerve

27
Q
A

Infraorbital nerve

28
Q
A

Alveolar branch

29
Q
A

Incisive branch

30
Q
A

Minor palatine nerve

31
Q
A

Minor palatine nerve

32
Q
A

Zygomatic nerve

33
Q
A

Minor petrosal nerve

34
Q
A

Otic ganglion

35
Q
A

Major pertrosal nerve

36
Q

3

A

Sphenopalatine foramen

37
Q
A

Pterygopalatine ganglion

38
Q

4

A

Foramen palatinum majus

39
Q

2

A

Maxillary foramen

40
Q

Maxillary nerve (CN-V2) function

A

Sensory:

  • Lower eyelid
  • Upper lip/teeth
  • Nose
41
Q

Before leaving the cranial cavity, maxillary nerve branches off…

A

Meningeal branch

42
Q

Give the branching of the maxillary nerve

A
  • Zygomatic nerve
  • Pterygopalatine nerve
    • Caudal nasal nerve
    • Major palatine nerve
    • Minor palatine nerve
  • Infraorbital nerve
43
Q

What is shown?

What do the colours represent?

A

Primary branches of the mandibular nerve (CN-V3) (eq)

  • Blue = Sensory
  • Red = Motor
  • Green = Parasympathetic
44
Q
A

Auriculotemporal nerve

45
Q
A

Masseteric nerve

46
Q
A

Pterygoid nerve

47
Q
A

Mylohyoid nerve

48
Q
A

Lingual nerve

49
Q
A

Buccal nerve

50
Q
A

Inferior alveolar nerve

51
Q
A

Alveolar nerve

52
Q
A

Mental nerve

53
Q

2

A

Mandibular foramen

54
Q

3

A

Incisura ovalis, foramen lacerum

55
Q

4

A

Mandibular ganglion

56
Q

Mandibular nerve (CN-V3) function

A

Motor:

  • Prehension muscles
  • Mastication muscles

Sensory:

  • Tongue
  • Lower teeth
  • Lower lip
57
Q

Give the branching of the mandibular nerve

A
  • Masticator nerve
  • Buccal nerve
  • Auriculotemporal nerve
  • Lingual nerve
  • Inferior alveolar nerve
58
Q

Trigeminal nerve exits the cranium via…

A

Ophthalmic: Foramen rotundum/fissura orbitalis

Maxillary: Foramen rotundum / fissura orbitalis

Mandibular: Foramen ovalis