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Body Structures H&N > 03b: Trigeminal > Flashcards

03b: Trigeminal Flashcards

1
Q

The trigeminal ganglion is located in (X), where it divides into its major divisions.

A

X = Meckel’s cave

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2
Q

The first, (X), division of trigeminal n exits the (Y) cranial fossa via the (Z). Which space does it enter?

A 
X = opthalmic
Y = middle
Z = superior orbital fissue

Enters posterior orbit

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3
Q

The second, (X), division of trigeminal n exits the (Y) cranial fossa via the (Z). Which space does it enter?

A 
X = maxillary
Y = middle
Z = foramen rotundum

Enters pterygopalatine fossa

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4
Q

The third, (X), division of trigeminal n exits the (Y) cranial fossa via the (Z). Which space does it enter?

A 
X = mandibular
Y = middle
Z = foramen ovale

Enters infratemporal fossa

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5
Q

List the different CN V nuclei in brainstem that receive sensory information.

A
  1. Mesencephalic
  2. Chief sensory
  3. Spinal (descending)
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6
Q

(X) CN V nucleus is responsible for controlling the force of the masticatory bite by receiving sensation from (Y) structures.

A 
X = Mesencephalic
Y = muscle spindles
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7
Q

(X) CN V nucleus receives signals of pain and temperature.

A

X = Spinal (descending)

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8
Q

(X) CN V receives the signals of fine touch and pressure

A

X = Chief sensory

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9
Q

General sensory territory for opthalmic division of CN V.

A

Skin and mucous membranes of superior aspect of face (including cornea of eye)

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10
Q

List the main branches off opthalmic division of CN V.

A
  1. Tentorial
  2. Frontal (supratrochlear and supraorbital)
  3. Lacrimal
  4. Nasociliary
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11
Q

Nasociliary branch of (X) has which branches?

A

X = opthalmic division of CN V

  1. Ant/Post ethmoidal
  2. Short/long ciliary
  3. Infratrochlear
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12
Q

Sensation to skin of the anteriomedial forehead and medial superior eyelid by (X). (Be specific)

A

X = Supratrochlear nerve (of V1)

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13
Q

Sensation to middle superior eyelid, anterolateral forehead/scalp, and mucosa of frontal sinus by (X). (Be specific)

A

X = Supraorbital nerve (of V1)

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14
Q

Supraorbital nerve exits orbit via:

A

Supraorbital foramen

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15
Q

Lacrimal nerve, a branch of (X), supplies:

A

X = V1 (opthalmic)

Sensation to lateral superior eyelid and lacrimal gland

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16
Q

Anterior/posterior ethmoidal nerves off of (X) supply:

A

X = nasociliary branch of V1

Sensation to:

  1. Ethmoidal air cells
  2. Sphenoid sinus
  3. Dura of anterior cranial fossa
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17
Q

External nasal nerve is branch of (X), which is a branch of (Y).

A 
X = anterior ethmoidal nerve
Y = Nasociliary nerve (of V1)
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18
Q

Sensation from the iris, cornea and ciliary body by (X) nerve.

A

X = short and long ciliary (off nasociliary branch of V1)

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19
Q

General sensory territory for maxillary division of CN V.

A
  1. Skin/mucous membranes between the corner of the eye and corner of the mouth
  2. Nasal cavities, midface paranasal sinuses
  3. Roof of the mouth and maxillary teeth
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20
Q

The maxillary nerve (V2) branches that leave (X) anteriorly via (Y) then emerge into (Z).

A 
X = pterygopalatine fossa
Y = inferior orbital fissure
Z = the orbit
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21
Q

List the maxillary nerve branches that branch anteriorly.

A
  1. Zygomatic
  2. Orbital
  3. Infraorbital
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22
Q

Zygomatic branch of V2 further branches into:

A

Zygomaticofacial and zygomaticotemporal nerves

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23
Q

(X) passes through bone of lateral orbit to emerge via similarly named foramen to supply skin over zygomatic arch.

A

X = zygomaticofacial (off zygomatic branch of V2)

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24
Q

(X) passes through bone of lateral orbit to emerge via similarly named foramen into the temporal fossa to supply the temporal area.

A

X = zygomaticotemporal (off zygomatic branch of V2)

25
The (X) nerve is the primary continuation of V2. It passes through (Y) canal and emerges through (Z) foramen. List its branches. Star those that are given within the canal.
X = Y = Z = infraorbital 1. Middle and anterior superior alveolar* 2. Palpebral 3. Nasal 4. Superior labial
26
The maxillary nerve (V2) branches that leave (X) laterally via (Y) then emerge into (Z).
``` X = pterygopalatine fossa Y = sphenopalatine foramen Z = lateral aspect of posterior nasal cavity ```
27
List the maxillary nerve branches that branch laterally.
1. Nasopalatine | 2. Medial and lateral posterior superior nasal
28
Nasopalatine branch of (X) nerve supplies:
X = V2 (maxillary division) 1. Posterior inferior nasal septum 2. Anterior hard palate
29
List maxillary (V2) branches that continue descent from PPF into (X) by passing through (Y).
``` X = oral cavity Y = palatine canal ``` Greater and lesser palatine nerves
30
Sensation to soft palate via (X). Sensation to hard palate via (Y).
``` X = lesser palatine nerve (V2) Y = greater palatine nerve (V2) ```
31
List maxillary (V2) branches that continue leave PPF through their own personal routes.
1. Superior posterior alveolar (pterygomaxillary fissure) | 2. Pharyngeal (palatovaginal canal)
32
(X) division of CN V carries (Y) nerve modalities to which muscles?
``` X = Mandibular (V3) Y = SVE ``` 1. 4 mastication (temporalis, masseter, pterygoids) 2. Tensor veli palatini (soft palate) 3. Tensor tympani (middle ear) 4. Anterior digastric and mylohyoid (floor of mouth)
33
List sensory nerves off V3 (mandibular). Star the two that follow roughly parallel paths.
1. Meningeal 2. Buccal 3. Auriculotemporal 4. Lingual* 5. Inferior alveolar*
34
Meningeal branch of (X) immediately returns to (Y) fossa via (Z) to supply innervation to:
``` X = V3 (mandibular) Y = middle cranial Z = foramen spinosum ``` Sensory to dura of anterior and middle cranial fossae
35
Buccal nerve of V3 supplies:
Sensation to: 1. Skin over buccinator 2. Buccal mucosa and gingiva tissue
36
Auriculotemporal nerve of (X) supplies:
X = V3 (mandibular) 1. Skin over temporal region and anterior external ear 2. TMJ 3. External auditory meatus; tympanic membrane (outer surface)
37
Lingual nerve passes (superficial/deep) to lateral pterygoid and travels on (X) aspect of the tongue. What does it innervate?
Deep; X = lateral Sensation to floor of mouth and anterior 2/3 of tongue
38
(X) nerve enters a bony tunnel in the mandible called the (Y). Along its route, it gives off the (Z) nerve, which supplies the skin of the chin and lower lip after emerging through:
``` X = inferior alveolar Y = mandibular canal Z = mental ``` Emerges through mental foramen
39
As well as the mental nerve, (X) gives off (Y) nerve to supply which muscle?
``` X = inferior alveolar Y = nerve to mylohyoid ``` Mylohyoid and anterior digastric
40
List the nerves off CN V (V1/V2/V3) that carry (X) nerve modalities to muscles. Star those that supply/give off additional branches to more than one muscles.
V3; X = SVE 1. Nerve to medial pterygoid* 2. Nerve to lateral pterygoid 3. Nerve to mylohyoid* 4. Masseteric nerve 5. Deep temporal nerves
41
In dental nerve block, the aim is to numb (X) nerve at which landmark?
X = inferior alveolar; Before enters bony canal
42
(X) nerve particularly susceptible to injury during (Y) molar tooth extraction. What are the symptoms?
``` X = lingual; Y = 3rd ``` Loss of sensation to anterior 2/3 tongue; loss of taste and innervation to submandibular and sublingual glands
43
List the parasympathetic ganglia in head and the respective location.
1. Ciliary (suspended from short ciliary nerve; posterior to globe in orbit) 2. Pterygopalatine (suspended from main root of V2; pterygopalatine fossa) 3. Submandibular (suspended from lingual; floor of mouth) 4. Otic (suspended from auriculotemporal nerve; infratremporal fossa)
44
List the parasympathetic ganglia in head and the respective CNs that jump onto their track.
1. Ciliary (CN III) 2. Pterygopalatine (CN VII) 3. Submandibular (CN VII) 4. Otic (CN IX)
45
Autonomics associated with V1: do sympathetic fibers reach targets via same tracks (nerve branches) as parasympathetics?
No
46
Autonomics associated with V2: do sympathetic fibers reach targets via same tracks (nerve branches) as parasympathetics?
Yes
47
Parasympathetic innervation that travels via Otic ganglion is supplied by (X) nerve and going to (Y) structure.
``` X = CN IX Y = parotid gland ```
48
Parasympathetic innervation that travels via Submandibular ganglion is supplied by (X) nerve and going to (Y) structure.
``` X = CN VII Y = submandibular and sublingual glands; mucosa to floor of mouth and surface of tongue ```
49
List the paranasal sinuses.
1. Frontal 2. Sphenoid 3. Ethmoid air cells 4. Maxillary
50
Frontal sinus innervation via:
Supraorbital nerve (V1)
51
Sphenoid sinus innervated via:
1. Posterior ethmoidal nerve (V1) | 2. Orbital branches of V2
52
Ethmoidal air cells innervated via:
1. Anterior and posterior ethmoidal nerves (V1) | 2. Orbital branches of V2
53
Maxillary sinus innervated via:
1. Alveolar branches of Infraorbital nerve (V2) | 2. Posterior superior alveolar nerve
54
Anterior 2/3 tongue sensation via which nerve?
Lingual nerve (V3)
55
Posterior 1/3 tongue sensation via which nerve?
CN IX
56
Infratrochlear nerve, a branch of (X), innervates:
X = V1 (opthalmic) Skin of superior nose, superior medial eyelid, and lacrimal sac
57
(Short/long) ciliary nerve important for (sympathetic/parasympathetic) NS. It acts as conduit for nerves that arrive on internal carotid artery.
Long; Sympathetic
58
(Parasymp/symp/somatic) nerves from CN (X) via (Y) ganglion jump from branches of V(1/2/3) and onto (Z) branch of V1 to reach the lacrimal gland.
``` Parasympathetic; X = VII Y = pterygopalatine V2; Z = lacrimal nerve ```
59
Pharyngeal nerve of V2 leaves pterygopalatine fossa via (X). This is located where, wrt (Y), through which V2 entered PPF originally.
X = palatovaginal canal Superior; Y = foramen rotundum

Body Structures H&N (14 decks)

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