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MD2S3: Anatomy 203 > Trigeminal Nerve > Flashcards

Trigeminal Nerve Flashcards

1
Q

Trigeminal Nerve Origin

A

Between Ventral Surface of Pons and Middle Cerebellar Peduncle

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2
Q

Trigeminal Nerve Roots

A

Sensory Root
Motor Root

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3
Q

Trigeminal Ganglion
Shape

A

Crescent

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4
Q

Trigeminal Ganglion
Location

A

Apex of Petrous Temporal Bone

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5
Q

Trigeminal Ganglion
What type of Cells form the Trigeminal Ganglion?

A

Pseudounipolar

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6
Q

Trigeminal Ganglion
Peripheral Processes of the Pseudounipolar Cells form …

A

Opthalmic Nerve
Maxillary Nerve
Sensory Part of Mandibular Nerve

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7
Q

Trigeminal Ganglion
Central Processes of Pseudounipolar Cells form …

A

Sensory Root of Trigeminal Nerve

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8
Q

What are the divisions of the Trigeminal Nerve?

A

Ophthalmic Nerve (V1): Purely Sensory
Maxillary Nerve (V2): Purely Sensory
Mandibular Nerve (V3): Mixed

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9
Q

Pathway of Motor Root of Trigeminal Nerve

A

Originates from Motor Nucleus of Trigeminal Nerve
Passes under Trigeminal Ganglion
Unites with Mandibular Division of Trigeminal Nerve

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10
Q

Nuclei
Nuclei of the Trigeminal Nerve

A

Mesencephalic Nucleus (Midbrain)
Main Sensory Nucleus (Pons)
Motor Nucleus (Pons)
Spinal Nucleus (Medulla)

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11
Q

Nuclei: Mesencephalic Nucleus
Location

A

Midbrain

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12
Q

Nuclei: Mesencephalic Nucleus
Function

A

Proprioception from:
Teeth
Facial Muscles
Extraocular Muscles
Muscles of Mastication

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13
Q

Nuclei: Main Sensory Nucleus
Location

A

In Pons, Lateral to Motor Nucleus

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14
Q

Nuclei: Main Sensory Nucleus
Continuous with ____ below

A

__spinal nucleus of trigeminal nerve__

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15
Q

Nuclei: Main Sensory Nucleus
Function

A

Touch (Point Localization, 2 Point Discrimination)
Pressure
Vibration

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16
Q

Nuclei: Main Sensory Nucleus
Receives sensation from …

A

V, VII, IX and X Nerves

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17
Q

Nuclei: Motor Nucleus
Location

A

In Pons, Medial to Main Sensory Nucleus

18
Q

Nuclei: Motor Nucleus
Which Muscles does it supply?

A

MMTTA
Muscles of Mastication
Mylohyoid
Tensor Tympani
Tensor Palati
Anterior Belly of Digastric

19
Q

Nuclei: Spinal Nucleus
Location

A

Extends through Medulla and into Two Cervical Segments of Spinal Cord

20
Q

Nuclei: Spinal Nucleus
Function

A

Detection of Pain and Temperature

21
Q

Nuclei: Spinal Nucleus
Receives sensation from …

A

V, VII, IX, X Nerves

22
Q

Ophthalmic Nerve
Fill out Ophthalmic Nerve Pathway

23
Q

Ophthalmic Nerve
Fill out Ophthalmic Nerve Branches

24
Q

Maxillary Nerve
Distribution

A

Cheeks and Lower Eye Lids
Lateral Aspects of Nose
Maxillary Sinuses
Upper Lip, Teeth of Upper Jaw and Palate

25
Q

Maxillary Nerve
Fill out Maxillary Nerve Pathway

26
Q

Maxillary Nerve
Fill out Maxillary Nerve Branches

27
Q

Pterygopalatine Ganglion
What is the Pterygopalatine Fossa?

A

Triangular Space

28
Q

Pterygopalatine Ganglion
Anatomically belongs to ____ but functionally belongs to ____

A

__Maxillary Branch of Trigeminal Nerve__
__Facial Nerve__

29
Q

Pterygopalatine Ganglion
Pterygopalatine Fossa boundaries

A

Anterior: Maxilla
Posterior: Lateral Pterygoid Plate
Medially: Perpendicular Palatine Bone

30
Q

Pterygopalatine Ganglion
Relation to Maxillary Nerve

A

Pterygopalatine Ganglion suspended from Maxillary Nerve

31
Q

Pterygopalatine Ganglion
Carries ____ and distributed via ____ to the _____

A

__Secretomotor Fibers__
__Greater Superior Petrosal Nerve__
__Lacrimal, Palatine, Pharyngeal and Nasal Gland__

32
Q

Pterygopalatine Ganglion
Roots

A

Parasympathetic Root: Secretory Fibers from Greater Superficial Petrosal
Sympathetic Root: Sympathetic Plexus from Deep Petrosal
Sensory root: Maxillary Nerve

33
Q

Mandibular Nerve
Fill out Mandibular Nerve Pathway

34
Q

Mandibular Nerve
Fill out Mandibular Nerve Branches

35
Q

Mandibular Nerve: Auriculotemporal Branch
Roots

A

Auricular Root
Temporal Root

36
Q

Mandibular Nerve: Auriculotemporal Branch
Pathway

A

Roots Encircle the Middle Meningeal Artery

37
Q

Mandibular Nerve: Auriculotemporal Branch
Auricular Branch supplies …

A

Skin over Upper Part of Auricle
Anterior 1/2 of External Auditory Canal
Tympanic Membrane

38
Q

Mandibular Nerve: Auriculotemporal Branch
Temporal Branch supplies …

A

Skin over Temple
Parotid Gland

39
Q

Mandibular Nerve: Lingual Branch
Supplies …

A

Anterior 2/3 of Tongue + Floor of Mouth
Submandibular and Sublingual Salivary Glands

40
Q

Mandibular Nerve: Inferior Alveolar Branch
Passes through the …

A

mandibular foramen and canal

41
Q

Mandibular Nerve: Inferior Alveolar Nerve
Mylohyoid Nerve function

A

Supplies Mylohyoid and Anterior Belly of Digastric

42
Q

Mandibular Nerve: Inferior Alveolar Nerve
Mental Nerve function

A

Supplies Chin and Lower Lip

Passes through Mental Foramen

MD2S3: Anatomy 203 (31 decks)

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