Nerves and Vessels Of The Oral Cavity

Question 1

Trigeminal Nerve (CN V) divisions:

Answer 1

Division 1: Ophthalmic
Division 2: Maxillary
Division 3: Mandibular

Question 2

The Ophthalmic Nerve exits the cranium via the _______ to supply 6 parts:

Answer 2

Superior Orbital Fissure

1. Scalp
2. Maxillary Sinus Forehead
3. Upper 1/3 of face
4. Superior Eyelid
5. Eye
6. Nose

Question 3

The Maxillary Nerve exits the cranium via the ______ into the ______ space.

Answer 3

Foramen Rotundum

Pterygopalatine

Question 4

Branches of the Maxillary Nerve

Answer 4

1. Pterygopalatine Branch
2. Posterior Superior Alveolar (PSA) nerve
3. Infraorbital Nerve
4. Zygomatic Nerve

Question 5

Branches of the Pterygopalatine Branch and what they supply

Answer 5

1. Descending Palatine -> Greater Palatine branch- mucosa of posterior 2/3 of hard palate and gingiva
2. Nasopalatine branch- anterior 1/3 of hard palate
3. Middle and Posterior or Lesser Palatine branch- tonsils and soft palate

Question 6

The Greater palatine enters palate through the _____.

The Nasopalatine branch enters through the _____.

The Middle and Posterior palatine enters through the ______.

Answer 6

Greater Palatine Foramen

Incisive Foramen

Lesser Palatine Foramina

Question 7

The PSA supplies the _____

Answer 7

Maxillary molars (pulps, ligaments, alveolar bone, facial gingiva)

Question 8

Infraorbital branches and what the supply:

Answer 8

Middle superior Alveolar (MSA) branches- premolar pulps, mesiobuccal roots area of max 1st molar

Anterior Superior Alveolar (ASA) branches- anterior max teeth, facial gingiva, part of sinus

Terminal branches- upper lip, nose, etc.

Question 9

The Zygomatic Branch supplies _______

Answer 9

Skin of temporal and orbit regions

Question 10

Branches of the Mandibular Nerve:

Answer 10

1. Auriculotemporal Nerve
2. Buccal/Long Buccal/Buccinator Nerve
3. Lingual Nerve
4. Inferior Alveolar Nerve

Question 11

The Trigeminal Nerve exits the cranium via ______

Answer 11

Foramen Ovale

Question 12

Auriculotemporal Branch supplies _____ and ______

Answer 12

Sensation to outer ear and skin anterior to ear

Proprioception to TMJ

Question 13

The Buccal Nerve goes through the _____ to supply _____.

Answer 13

• Buccal gingiva of mand posteriors

- Buccal mucosa and skin of cheeks

Question 14

The Lingual Nerve passes medial to ____ and provides _____

Answer 14

Ramus

Sensation to anterior 2/3 of tongue and lingual gingiva in mandible

Question 15

The Inferior Alveolar Nerve has two terminal branches:

Answer 15

Mental Branch- exits mandible via mental foramen -> supplies lower lip, anterior facial gingiva

Incisive Branch- continuation of inf alveolar to supply anterior pulps

Question 16

Mandibular Nerve Motor Branches go to ____.

Branches are:

Answer 16

Muscles of mastication

• Masseteric
• Posterior and Anterior temporal
• Medial pterygopalatine
• Lateral pterygoid

Question 17

The Facial Nerve (__) exits the brain case via ____ into ___ part of temporal bone

Answer 17

VII

Internal Acoustic meatus

Petrous

Question 18

Facial nerve branches exit the temporal bone:

• via ____ becoming ____ (taste) joining lingual branch of CN V to supply _____
• via ____ for efferent fibers

Answer 18

Petrotympanic fissure

Chorda Tympani

Anterior 2/3 of tongue

Stylomastoid Foramen

Question 19

Facial nerve efferent fibers go to many muscles of ____; secretory fibers go to _____ and _____ salivary glands

Answer 19

Facial Expression

Submandibular
Sublingual

Question 20

Glossopharyngeal Nerve (__) exits cranium via ____.

Answer 20

IX (Nine)

Jugular Foramen

Question 21

Glossopharyngeal Nerve afferent fibers supply ____;
Secretory fibers supply ____;
Efferent fibers supply ____

Answer 21

Posterior 1/3 of tongue, pharynx, tonsils

Parotid gland

Muscles of pharynx

Question 22

Hypoglossal Nerve (__) exits cranium via ____ on walls of foramen magnum

Answer 22

XII (12)

Hypoglossal canal

Question 23

Hypoglossal nerve:

Efferent fibers supply ____

Answer 23

Muscles that move the tongue

Question 24

Nerve Supply to Tongue:

Answer 24

Afferent:

• CN V -> Mandibular n. -> Lingual n. : anterior 2/3 sensation
• CN VII: anterior 2/3 taste
• CN IX: posterior 1/3 sensation and taste

Efferent:
-CN XII: tongue muscles

Palatoglossus m. innervated by CN X

Question 25

Nerve Supply to Salivary Glands:

Answer 25

- CN VII: submandibular and sublingual glands | - CN IX: parotid glands

Question 26

Supplies upper and lower teeth with blood

Answer 26

Maxillary artery

Question 27

External Carotid a. Branches:

Answer 27

Lingual a.- tongue, floor, sublingual gland and adjacent gingiva Facial a.- soft palate, tonsils, pharynx, chin, floor of mouth, lips, nose Maxillary a.- max and mand teeth and mastication muscles

Question 28

Maxillary Artery Branches (In 3 groups):

Answer 28

- Mandibular part (Mandible) - Pterygoid part (Muscles) - Pterygopalatine Part (Maxillae)

Question 29

Veins drain blood from the face into the ____ vein then the ______ vein then the SVC then the heart

Answer 29

Common facial v. Internal Jugular v.

Question 30

Veins from upper face and maxillary teeth drain into ______. The _____ drains from mandible and lower teeth into _____.

Answer 30

Pterygoid plexus Inferior Alveolar v. Pterygoid plexus

Question 31

The pterygoid plexus empties into the _____ and _____ veins.

Answer 31

Maxillary Retromandibular

Question 32

The ____ vein runs parallel to the facial artery to collect from the same structures. Blood from the tongue is collected by the ____ vein

Answer 32

Facial v. Lingual v.

Question 33

Lymph Nodes of Face and Neck (and what they drain):

Answer 33

- Parotid nodes (cheek, ear, eyelids) - Submental nodes (tip of tongue, lower lip, anterior floor, mandibular incisors - Submandibular nodes (other max and mand teeth, posterior floor, tongue, lips)

Question 34

All lymph nodes from face and neck drain to ____ nodes

Answer 34

Cervical

Question 35

CN V = CN VII = CN IX = CN XII =

Answer 35

V = Trigeminal VII = Facial IX = Glossopharyngeal XII = Hypoglossal