Part 2

Question 1

Each trigeminal nerve is a short nerve trunk composed of

Answer 1

Two closely adapted roots

Question 2

The roots consist of

Answer 2

A thicker sensory root and a thinner motor root

Question 3

Where does the trigeminal nerve originate?

Answer 3

Anterior to petrous portion of temporal bone

Question 4

What is the trigeminal ganglion?

Answer 4

Bulge in the sensory root of the trigeminal nerve

Question 5

List the three trigeminal nerve branches

Answer 5

V1 Opthalmic
V2 Maxillary
V3 Mandibular

Question 6

Which division of trigeminal nerve is the smallest?

Answer 6

V1 Ophthalmic

Question 7

What does the parasympathetic portion of the ophthalmic division do?

Answer 7

Nerve innervation in the lacrimal gland

Question 8

Ophthalmic division is comprised of three branches called

Answer 8

Frontal Nerve
Lacrimal Nerve
Nasociliary Nerve

Question 9

What nerves are responsible for the production of tears?

Answer 9

Lacrimal nerve parasympathetic nerves

Question 10

Maxillary nerve is formed in the

Answer 10

Pterygopalatine fossa

Question 11

Where is the pterygopalatine ganglion located?

Answer 11

Just inferior to maxillary nerve in the pterygopalatine fossa

Question 12

Maxillary branches are all what type of nerve?

Answer 12

Afferent (Sensory)

Question 13

List the 8 Maxillary nerve branches

Answer 13

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

Question 14

Function of zygomatic nerve

Answer 14

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

Question 15

Zygomatic nerve branch path

Answer 15

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

Question 16

What is the largest nerve branch of V2 (Maxillary)

Answer 16

Infraorbital Nerve

Question 17

Infraorbital nerve branch path

Answer 17

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

Question 18

Anterior superior alveolar nerve branch path

Answer 18

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

Question 19

Anterior superior alveolar nerve branch serves as an afferent nerve for

Answer 19

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

Question 20

What is crossover-innervation

Answer 20

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

Question 21

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

Answer 21

30%

Question 22

Middle superior alveolar nerve branch path

Answer 22

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

Question 23

The middle superior alveolar nerve serves as an afferent nerve for

Answer 23

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

Question 24

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

Answer 24

The anterior superior alveolar nerve

Question 25

Posterior superior alveolar nerve branch path

Answer 25

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

Question 26

The posterior superior alveolar nerve serves as an afferent nerve for

Answer 26

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

Question 27

Greater palatine nerve branch pathway

Answer 27

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

Question 28

Greater palatine nerve serves as an afferent nerve for

Answer 28

Posterior hard palate, palatal periodontium and gingiva

Question 29

Lesser palatine nerve branch path

Answer 29

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

Question 30

Lesser palatine nerve serves as an afferent nerve for

Answer 30

Soft palate and palatine tonsils

Question 31

Clinical considerations when administering local anaesthetic in greater palatine nerve block

Answer 31

LA can cause gag reflex and discomfort

Question 32

Nasopalatine nerve branch path

Answer 32

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

Question 33

The largest of the three divsions of the Trigeminal nerve

Answer 33

V3 Mandibular

Question 34

The main nerve trunk of the Mandibular nerve two branches are

Answer 34

Meningeal Nerve Medial Pterygoid Nerve

Question 35

Is the Mengingeal afferent or efferent?

Answer 35

Afferent

Question 36

Is the medial pterygoid afferent or efferent?

Answer 36

Efferent

Question 37

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

Answer 37

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

Question 38

Posterior nerve branches of the mandibular nerve

Answer 38

Auriculotemporal Lingual Inferior Alveolar Mental Incisive Mylohyoid

Question 39

The buccal nerve innervates

Answer 39

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

Question 40

The buccal long nerve innervates

Answer 40

Tissues not teeth

Question 41

The lingual nerve innervates

Answer 41

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

Question 42

The inferior alveolar nerve innervates

Answer 42

All lower molars

Question 43

The incisive nerve innervates

Answer 43

Mandibular anterior teeth and premolars

Question 44

Branches of the facial nerve

Answer 44

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

Question 45

5 branches to the muscles of facial expression

Answer 45

Temporal Nerve Zygomatic Nerve Mandibular Nerve Buccal Nerve Cervical Nerve