Anatomy - CN V - Trigeminal Flashcards Preview

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

Flashcards in Anatomy - CN V - Trigeminal Deck (43):
1

What are the 3 branches of CN V?

1. Ophthalmic
2. Maxillary
3. Mandibular

2

What are the 3 branches of V1?

1. Frontal
2. Lacrimal
3. Nasociliary

3

What are the 2 branches of the Frontal n.?

1. Supratrochlear
2. Supraorbital

4

What are the branches of the Nasociliary n.?

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

5

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

Inferiorly

Tendinous Ring

6

The frontal and lacrimal nerves enter the orbit through the __

Superior tip of the superior orbital fissure

7

Where does the supratrochlear n. exit the orbit?

What does it supply?

Near the medial corner


Sensory to:
scalp of forehead
frontal sinus
conjunctiva
upper eyelid

8

Where does the supraorbital n. exit the orbit?

What does it supply?

Through the supraorbital foramen


Sensory to:
scalp of the head and forehead
upper eyelid

9

Where does the lacrimal n. exit the orbit?

What does it supply?

Lateral corner



Lacrimal gland

Sensory to:
Conjunctiva
Upper eyelid

10

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

Zygomaticotemporal

11

Which is the most inferior of the V1 branches?

Nasociliary n.

12

Short ciliary nerves carry ___

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

13

Long ciliary nerves carry ___

Sensory info from the eye

BUT bypass the ciliary ganglion

14

Posterior ethmoid n. carries ___

Sensory info to:
Sphenoid sinus
Posterior ethmoid air cells

15

Anterior ethmoid n. carries ___

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

16

Infratrochlear n. carries ___

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

17

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

Pterygopalatine

Pterygopalatine Ganglion

Zygomatic and Infraorbital

18

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

Ganglionic branches

19

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?

Posterior Superior Alveolar n.

Sensory to:
Upper premolars and molars

20

Branches of the Zygomatic n.
Which is a branch off of ___

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


V2

21

Branches of the infraorbital n.
Which is a branch of __

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


V2

22

This nerve provides sensory info to upper incisors and canines

Anterior Superior Alveolar n.

23

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

Inferior palpebral n.

24

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

Lateral nasal n.

25

This nerve provides sensory info to:
-the skin between the nose and upper lip
-the upper lip
-a portion of the oral mucosa

Superior labial n.

26

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

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

27

The mandibular n. is divided into 2 divisions:

Anterior
Posterior

28

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

Anterior

Buccal

29

Nerves in the anterior division of V3:

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

30

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

Nerve to Medial Pterygoid

31

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

Tensor Tympani
Tensor Veli Palatini

32

What does the Masseteric n. innervate?

Masseter

33

What innervates the temporalis muscle?

Deep Temporal n.

34

The buccal n. provides ___ to ___

Sensory info to cheek

35

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

1. Auriculotemporal n.
2. Lingual n.
3. Inferior Alveolar n.

36

The auriculotemporal n. provides __

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

Autonomics:
Parotid gland

37

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

Hyoglossus

N. to sublingual gland
Sublingual n.

38

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

Submandibular Ganglion

39

The sublingual n. gives sensory info to __

Anterior 2/3rds of the tongue

40

N. to mylohyoid is a branch off of ___

It innervates___

Inferior Alveolar n.

Mylohyoid
Anterior belly of Digastric

41

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

Lower molars and premolars


Incisive n. and Mental n.

42

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

Incisive n.

43

This nerve gives sensory info to the chin and lower lip

Mental n.