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Nervous System > Part 2 > Flashcards

Part 2 Flashcards

1
Q

Each trigeminal nerve is a short nerve trunk composed of

A

Two closely adapted roots

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2
Q

The roots consist of

A

A thicker sensory root and a thinner motor root

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3
Q

Where does the trigeminal nerve originate?

A

Anterior to petrous portion of temporal bone

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4
Q

What is the trigeminal ganglion?

A

Bulge in the sensory root of the trigeminal nerve

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5
Q

List the three trigeminal nerve branches

A

V1 Opthalmic
V2 Maxillary
V3 Mandibular

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6
Q

Which division of trigeminal nerve is the smallest?

A

V1 Ophthalmic

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7
Q

What does the parasympathetic portion of the ophthalmic division do?

A

Nerve innervation in the lacrimal gland

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8
Q

Ophthalmic division is comprised of three branches called

A

Frontal Nerve
Lacrimal Nerve
Nasociliary Nerve

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9
Q

What nerves are responsible for the production of tears?

A

Lacrimal nerve parasympathetic nerves

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10
Q

Maxillary nerve is formed in the

A

Pterygopalatine fossa

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11
Q

Where is the pterygopalatine ganglion located?

A

Just inferior to maxillary nerve in the pterygopalatine fossa

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12
Q

Maxillary branches are all what type of nerve?

A

Afferent (Sensory)

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13
Q

List the 8 Maxillary nerve branches

A
  1. Zygomatic Nerve
  2. Infraoribtial Nerve
  3. Anterior Superior Alveolar Nerve
  4. Middle Superior Alveolar Nerve
  5. Posterior Superior Alveolar Nerve
  6. Greater Palatine Nerve
  7. Lesser Palatine Nerve
  8. Nasopalatine Nerve
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14
Q

Function of zygomatic nerve

A

Provides sensation from the skin of the cheek in the zygomatic bone region and from the skin of the temporal region

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15
Q

Zygomatic nerve branch path

A

Zygomatic nerve carries parasympathetic fibers for lacrimal gland – Inferior orbital fissure – ptreygopalatine fossa to form the maxillary nerve

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16
Q

What is the largest nerve branch of V2 (Maxillary)

A

Infraorbital Nerve

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17
Q

Infraorbital nerve branch path

A

Infraorbital nerve carries sensation for upper lip, medial cheek, lateral side of nose, lower eyelid– infraorbital foramen – pterygopalatine fossa to form the maxillary nerve

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18
Q

Anterior superior alveolar nerve branch path

A

Anterior superior alveolar nerve originates in pulp of teeth 13-11, 21-23 – infraorbital nerve in the infraorbital canal – pterygopalatine fossa to form the maxillary nerve

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19
Q

Anterior superior alveolar nerve branch serves as an afferent nerve for

A

Teeth 13-11, 21-23, and associated labial gingiva and labial periodontium to the midline

20
Q

What is crossover-innervation

A

Overlap of terminal nerve fibers from the contralateral side (Nerves will cross over the the other side)

21
Q

How often is the middle superior alveolar nerve present in the population?

A

30%

22
Q

Middle superior alveolar nerve branch path

A

Middle superior alveolar nerve originates in the pulp of max premolar and mesial buccal root of first molar – lateral wall of the maxillary sinus and joins the infraorbital nerve – pterygopalatine fossa to form the maxillary nerve

23
Q

The middle superior alveolar nerve serves as an afferent nerve for

A

Maxillary premolars to mesial buccal root of first molars, associated buccal periodontium and buccal gingiva

24
Q

When the middle superior alveolar nerve is not present, what nerve will serve as an afferent nerve for the maxillary premolars?

A

The anterior superior alveolar nerve

25
Q

Posterior superior alveolar nerve branch path

A

Posterior superior alveolar nerve originates in the pulp of maxillary molars – joins the infraorbital nerve or the maxillary nerve and goes directly into the pterygopalatine fossa

26
Q

The posterior superior alveolar nerve serves as an afferent nerve for

A

Maxillary molars (except the MB root of the first molar) and associated buccal periodontium, buccal gingiva, and maxillary sinuses

27
Q

Greater palatine nerve branch pathway

A

Greater palatine nerve posterior hard palate and palatal periodontium and gingiva – greater palatine foramen in the horizontal plate of the palatine bone – joins the lesser palatine nerve in the pterygopalatine canal

28
Q

Greater palatine nerve serves as an afferent nerve for

A

Posterior hard palate, palatal periodontium and gingiva

29
Q

Lesser palatine nerve branch path

A

Lesser palatine nerve soft palate and palatine tonsils – lesser palatine foramen – joins the greater palatine foramen in the pterygopalatine canal

30
Q

Lesser palatine nerve serves as an afferent nerve for

A

Soft palate and palatine tonsils

31
Q

Clinical considerations when administering local anaesthetic in greater palatine nerve block

A

LA can cause gag reflex and discomfort

32
Q

Nasopalatine nerve branch path

A

Nasopalatine nerve anterior hard palate, palatal periodontium, gingiva of maxillary anterior teeth – incisive foramen – incisive canal – nasal septum – meets maxillary nerve in the pterygopalatine fossa

33
Q

The largest of the three divsions of the Trigeminal nerve

A

V3 Mandibular

34
Q

The main nerve trunk of the Mandibular nerve two branches are

A

Meningeal Nerve
Medial Pterygoid Nerve

35
Q

Is the Mengingeal afferent or efferent?

A

Afferent

36
Q

Is the medial pterygoid afferent or efferent?

A

Efferent

37
Q

Pathway of the anterior trunk of the mandibular branch is formed by the merger of the

A

Buccal nerve and additional muscular nerve branches (Deep temporal nerve, masseteric nerve, lateral pterygoid nerve)

38
Q

Posterior nerve branches of the mandibular nerve

A

Auriculotemporal
Lingual
Inferior Alveolar
Mental
Incisive
Mylohyoid

39
Q

The buccal nerve innervates

A

Skin of cheek, buccal mucosa, and buccal gingiva of mandibular posterior teeth

40
Q

The buccal long nerve innervates

A

Tissues not teeth

41
Q

The lingual nerve innervates

A

Body of tongue, floor of mouth and lingual gingiva of all mandibular teeth. TISSUES NOT TEETH

42
Q

The inferior alveolar nerve innervates

A

All lower molars

43
Q

The incisive nerve innervates

A

Mandibular anterior teeth and premolars

44
Q

Branches of the facial nerve

A

Greater Petrosal Nerve
Chorda Tympani Nerve
Posterior Auricular Nerve
Stylohyoid Nerve
Posterior Diagastric Nerve
Temporal Nerve
Zygomatic Nerve
Mandibular Nerve
Buccal Nerve
Cervical Nerve

45
Q

5 branches to the muscles of facial expression

A

Temporal Nerve
Zygomatic Nerve
Mandibular Nerve
Buccal Nerve
Cervical Nerve

Nervous System (2 decks)

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