03b: Trigeminal Flashcards Preview

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

Flashcards in 03b: Trigeminal Deck (59):
1

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

X = Meckel's cave

2

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

X = opthalmic
Y = middle
Z = superior orbital fissue

Enters posterior orbit

3

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

X = maxillary
Y = middle
Z = foramen rotundum

Enters pterygopalatine fossa

4

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

X = mandibular
Y = middle
Z = foramen ovale

Enters infratemporal fossa

5

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

1. Mesencephalic
2. Chief sensory
3. Spinal (descending)

6

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

X = Mesencephalic
Y = muscle spindles

7

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

X = Spinal (descending)

8

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

X = Chief sensory

9

General sensory territory for opthalmic division of CN V.

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

10

List the main branches off opthalmic division of CN V.

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

11

Nasociliary branch of (X) has which branches?

X = opthalmic division of CN V

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

12

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

X = Supratrochlear nerve (of V1)

13

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

X = Supraorbital nerve (of V1)

14

Supraorbital nerve exits orbit via:

Supraorbital foramen

15

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

X = V1 (opthalmic)

Sensation to lateral superior eyelid and lacrimal gland

16

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

X = nasociliary branch of V1

Sensation to:
1. Ethmoidal air cells
2. Sphenoid sinus
3. Dura of anterior cranial fossa

17

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

X = anterior ethmoidal nerve
Y = Nasociliary nerve (of V1)

18

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

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

19

General sensory territory for maxillary division of CN V.

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

20

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

X = pterygopalatine fossa
Y = inferior orbital fissure
Z = the orbit

21

List the maxillary nerve branches that branch anteriorly.

1. Zygomatic
2. Orbital
3. Infraorbital

22

Zygomatic branch of V2 further branches into:

Zygomaticofacial and zygomaticotemporal nerves

23

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

X = zygomaticofacial (off zygomatic branch of V2)

24

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

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