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Block 5 Material > Anatomy - CN V - Trigeminal > Flashcards

Anatomy - CN V - Trigeminal Flashcards

1
Q

What are the 3 branches of CN V?

A
  1. Ophthalmic
  2. Maxillary
  3. Mandibular
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2
Q

What are the 3 branches of V1?

A
  1. Frontal
  2. Lacrimal
  3. Nasociliary
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3
Q

What are the 2 branches of the Frontal n.?

A
  1. Supratrochlear

2. Supraorbital

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4
Q

What are the branches of the Nasociliary n.?

A
  1. Short ciliary nerves
  2. Long
  3. Post. Ethmoid n.
  4. Ant. Ethmoid n.
  5. Infratrochlear n.
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5
Q

The nasociliary n. enters the orbit more ___ (than the frontal and lacrimal nerves) within the ___ of the supraocular muscles

A

Inferiorly

Tendinous Ring

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6
Q

The frontal and lacrimal nerves enter the orbit through the __

A

Superior tip of the superior orbital fissure

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7
Q

Where does the supratrochlear n. exit the orbit?

What does it supply?

A

Near the medial corner

Sensory to:
scalp of forehead
frontal sinus
conjunctiva
upper eyelid
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8
Q

Where does the supraorbital n. exit the orbit?

What does it supply?

A

Through the supraorbital foramen

Sensory to:
scalp of the head and forehead
upper eyelid

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9
Q

Where does the lacrimal n. exit the orbit?

What does it supply?

A

Lateral corner

Lacrimal gland

Sensory to:
Conjunctiva
Upper eyelid

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10
Q

The lacrimal n. is connected to the ___ nerve of V2

A

Zygomaticotemporal

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11
Q

Which is the most inferior of the V1 branches?

A

Nasociliary n.

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12
Q

Short ciliary nerves carry ___

A

Sensory info from the eye through ciliary ganglion and, via communicating branches, into the nasociliary

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13
Q

Long ciliary nerves carry ___

A

Sensory info from the eye

BUT bypass the ciliary ganglion

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14
Q

Posterior ethmoid n. carries ___

A

Sensory info to:
Sphenoid sinus
Posterior ethmoid air cells

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15
Q

Anterior ethmoid n. carries ___

A

Sensory info to:
Middle and anterior ethmoid air cells
Anterior portion of nasal septum
Lateral portion of nose

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16
Q

Infratrochlear n. carries ___

A 
Sensory info to:
Soft tissue at the corner of the orbit
Conjunctiva
Upper eyelid
Bridge of nose
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17
Q

Within the ____ fossa, the maxillary n. gives rise to branches, communicates with ___ and then divides into ___ and ___ nerves.

A

Pterygopalatine

Pterygopalatine Ganglion

Zygomatic and Infraorbital

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18
Q

These nerves arise within the pterygopalatine fossa and connect V2 to the pterygopalatine ganglion:

A

Ganglionic branches

19
Q

This nerve branches off distal to the pterygopalatine ganglion, courses inferiorly over the tuberosity of the maxilla to enter the Alveolar Canal.
What is it and what does it supply?

A

Posterior Superior Alveolar n.

Sensory to:
Upper premolars and molars

20
Q

Branches of the Zygomatic n.

Which is a branch off of ___

A
  1. Communicating branch
  2. Zygomaticofacial n.
    3 zygomaticotemporal n.

V2

21
Q

Branches of the infraorbital n.

Which is a branch of __

A
  1. Anterior Superior Alveolar n.
  2. Inferior Palpebral n.
  3. Lateral Nasal n.
  4. Superior Labial n.

V2

22
Q

This nerve provides sensory info to upper incisors and canines

A

Anterior Superior Alveolar n.

23
Q

This nerve courses superiorly from the infraorbital foramen and provides sensory info to the lower eyelid and conjunctiva

A

Inferior palpebral n.

24
Q

This nerve provides sensory info to the nasal septum and the floor of the nasal cavity

A

Lateral nasal n.

25
Q

This nerve provides sensory info to:

  • the skin between the nose and upper lip
  • the upper lip
  • a portion of the oral mucosa
A

Superior labial n.

26
Q

Rank the 3 branches of CN V in order from largest to smallest

A

Mandibular (3)
Maxillary (2)
Ophthalmic (1)

27
Q

The mandibular n. is divided into 2 divisions:

A

Anterior

Posterior

28
Q

The ___ division of V3 is the motor root of the trigeminal, with the exception of ___

A

Anterior

Buccal

29
Q

Nerves in the anterior division of V3:

A
  1. N. to Medial Pterygoid
  2. N. to Lateral Pterygoid
  3. Masseteric n.
  4. Deep Temporal n.
  5. Buccal n.
30
Q

This branch of V3 supports the Otic ganglion, but has no synaptic connections there

A

Nerve to Medial Pterygoid

31
Q

The N. to Medial Pterygoid gives of muscular branches to ___ and ___

A

Tensor Tympani

Tensor Veli Palatini

32
Q

What does the Masseteric n. innervate?

A

Masseter

33
Q

What innervates the temporalis muscle?

A

Deep Temporal n.

34
Q

The buccal n. provides ___ to ___

A

Sensory info to cheek

35
Q

The posterior division of V3 is the origin of what 3 nerves?

A
  1. Auriculotemporal n.
  2. Lingual n.
  3. Inferior Alveolar n.
36
Q

The auriculotemporal n. provides __

A 
Sensory info:
Temporal region
TMJ
Auditory canal
Outer surface of the tympanum

Autonomics:
Parotid gland

37
Q

At the ___ the lingual n. bifurcates to form the ___

A

Hyoglossus

N. to sublingual gland
Sublingual n.

38
Q

The Lingual n. is connected to the ___ by communicating branches

A

Submandibular Ganglion

39
Q

The sublingual n. gives sensory info to __

A

Anterior 2/3rds of the tongue

40
Q

N. to mylohyoid is a branch off of ___

It innervates___

A

Inferior Alveolar n.

Mylohyoid
Anterior belly of Digastric

41
Q

Within the mandibular canal, the inferior Alveolar n. sends sensory branches to the ___ then bifurcates anteriorly into the __

A

Lower molars and premolars

Incisive n. and Mental n.

42
Q

This nerve gives sensory info to the lower incisors, canine, and the first premolar and gingiva

A

Incisive n.

43
Q

This nerve gives sensory info to the chin and lower lip

A

Mental n.

Block 5 Material (17 decks)

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