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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
Q

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.

A

X = Y = Z = infraorbital

  1. Middle and anterior superior alveolar*
  2. Palpebral
  3. Nasal
  4. Superior labial
26
Q

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

A 
X = pterygopalatine fossa
Y = sphenopalatine foramen
Z = lateral aspect of posterior nasal cavity
27
Q

List the maxillary nerve branches that branch laterally.

A
  1. Nasopalatine

2. Medial and lateral posterior superior nasal

28
Q

Nasopalatine branch of (X) nerve supplies:

A

X = V2 (maxillary division)

  1. Posterior inferior nasal septum
  2. Anterior hard palate
29
Q

List maxillary (V2) branches that continue descent from PPF into (X) by passing through (Y).

A 
X = oral cavity
Y = palatine canal

Greater and lesser palatine nerves

30
Q

Sensation to soft palate via (X). Sensation to hard palate via (Y).

A 
X = lesser palatine nerve (V2)
Y = greater palatine nerve (V2)
31
Q

List maxillary (V2) branches that continue leave PPF through their own personal routes.

A
  1. Superior posterior alveolar (pterygomaxillary fissure)

2. Pharyngeal (palatovaginal canal)

32
Q

(X) division of CN V carries (Y) nerve modalities to which muscles?

A 
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
Q

List sensory nerves off V3 (mandibular). Star the two that follow roughly parallel paths.

A
  1. Meningeal
  2. Buccal
  3. Auriculotemporal
  4. Lingual*
  5. Inferior alveolar*
34
Q

Meningeal branch of (X) immediately returns to (Y) fossa via (Z) to supply innervation to:

A 
X = V3 (mandibular)
Y = middle cranial
Z = foramen spinosum

Sensory to dura of anterior and middle cranial fossae

35
Q

Buccal nerve of V3 supplies:

A

Sensation to:

  1. Skin over buccinator
  2. Buccal mucosa and gingiva tissue
36
Q

Auriculotemporal nerve of (X) supplies:

A

X = V3 (mandibular)

  1. Skin over temporal region and anterior external ear
  2. TMJ
  3. External auditory meatus; tympanic membrane (outer surface)
37
Q

Lingual nerve passes (superficial/deep) to lateral pterygoid and travels on (X) aspect of the tongue. What does it innervate?

A

Deep;
X = lateral

Sensation to floor of mouth and anterior 2/3 of tongue

38
Q

(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:

A 
X = inferior alveolar
Y = mandibular canal
Z = mental

Emerges through mental foramen

39
Q

As well as the mental nerve, (X) gives off (Y) nerve to supply which muscle?

A 
X = inferior alveolar
Y = nerve to mylohyoid

Mylohyoid and anterior digastric

40
Q

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.

A

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
Q

In dental nerve block, the aim is to numb (X) nerve at which landmark?

A

X = inferior alveolar;

Before enters bony canal

42
Q

(X) nerve particularly susceptible to injury during (Y) molar tooth extraction. What are the symptoms?

A 
X = lingual;
Y = 3rd

Loss of sensation to anterior 2/3 tongue; loss of taste and innervation to submandibular and sublingual glands

43
Q

List the parasympathetic ganglia in head and the respective location.

A
  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
Q

List the parasympathetic ganglia in head and the respective CNs that jump onto their track.

A
  1. Ciliary (CN III)
  2. Pterygopalatine (CN VII)
  3. Submandibular (CN VII)
  4. Otic (CN IX)
45
Q

Autonomics associated with V1: do sympathetic fibers reach targets via same tracks (nerve branches) as parasympathetics?

A

No

46
Q

Autonomics associated with V2: do sympathetic fibers reach targets via same tracks (nerve branches) as parasympathetics?

A

Yes

47
Q

Parasympathetic innervation that travels via Otic ganglion is supplied by (X) nerve and going to (Y) structure.

A 
X = CN IX
Y = parotid gland
48
Q

Parasympathetic innervation that travels via Submandibular ganglion is supplied by (X) nerve and going to (Y) structure.

A 
X = CN VII
Y = submandibular and sublingual glands; mucosa to floor of mouth and surface of tongue
49
Q

List the paranasal sinuses.

A
  1. Frontal
  2. Sphenoid
  3. Ethmoid air cells
  4. Maxillary
50
Q

Frontal sinus innervation via:

A

Supraorbital nerve (V1)

51
Q

Sphenoid sinus innervated via:

A
  1. Posterior ethmoidal nerve (V1)

2. Orbital branches of V2

52
Q

Ethmoidal air cells innervated via:

A
  1. Anterior and posterior ethmoidal nerves (V1)

2. Orbital branches of V2

53
Q

Maxillary sinus innervated via:

A
  1. Alveolar branches of Infraorbital nerve (V2)

2. Posterior superior alveolar nerve

54
Q

Anterior 2/3 tongue sensation via which nerve?

A

Lingual nerve (V3)

55
Q

Posterior 1/3 tongue sensation via which nerve?

A

CN IX

56
Q

Infratrochlear nerve, a branch of (X), innervates:

A

X = V1 (opthalmic)

Skin of superior nose, superior medial eyelid, and lacrimal sac

57
Q

(Short/long) ciliary nerve important for (sympathetic/parasympathetic) NS. It acts as conduit for nerves that arrive on internal carotid artery.

A

Long; Sympathetic

58
Q

(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.

A 
Parasympathetic;
X = VII
Y = pterygopalatine
V2; 
Z = lacrimal nerve
59
Q

Pharyngeal nerve of V2 leaves pterygopalatine fossa via (X). This is located where, wrt (Y), through which V2 entered PPF originally.

A

X = palatovaginal canal
Superior;
Y = foramen rotundum

Body Structures H&N (14 decks)

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