Mandibular Nerve

Question 1

What does the sensory division of the mandibular nerve supply

Answer 1

The mucous membranes of mouth and cheek
Anterior 2/3rds of tongue
Lower teeth
Skin of lower jaw
Side of head and scalp
Meninges of anterior and middle cranial fossae

Question 2

What does the motor division of the mandibular nerve supply

Answer 2

Muscles of mastication
Tensor tympani
Tensor veli palatini
Mylohyoid
Anterior belly of digastric

Question 3

What is the origin of the mandibular nerve

Answer 3

Arises in middle cranial fossa from trigeminal ganglion
Large sensory and small motor component

Question 4

What is the course of the mandibular nerve

Answer 4

Passes through ovale foramen
Otic ganglion attached to stem
Almost immediately divides into anterior and posterior branches

Question 5

What are the 3 motor branches of the main trunk of the mandibular nerve

Answer 5

Nerve to medial pterygoid
Nerve to tensor tympani
Nerve to tensor veli palatini

Question 6

What is the main trunk branch of the mandibular nerve

Answer 6

Meningeal branch

Question 7

What is the sensory branch of the main trunk of the mandibular nerve

Answer 7

Nervous spinosus

Question 8

What are the 3 motor branches of the anterior trunk of the mandibular nerve

Answer 8

Masseter
Lateral pterygoid
Temporal

Question 9

What is the sensory branch of the anterior trunk of the mandibular nerve

Answer 9

Buccal

Question 10

What are the 2 sensory branches of the posterior trunk of the mandibular nerve

Answer 10

Auriculotemporal
Lingual

Question 11

What is the sensory and motor branch of the posterior of the mandibular nerve

Answer 11

Inferior alveolar - nerve to mylohyoid (motor) and mental (sensory)

Question 12

What is the auricular branch of the auriculotemporal nerve

Answer 12

Auricle, external acoustic meatus, outer aspect of tympanic membrane

Question 13

What is the articular branch of the auriculotemporal nerve

Answer 13

TMJ

Question 14

What are the secretory fibres of the auriculotemporal nerve

Answer 14

Parotid gland

Question 15

What is the temporal branch of the auriculotemporal nerve

Answer 15

Overlying skin and lateral aspect of scalp

Question 16

What is the function of the lingual nerve

Answer 16

Sensation to anterior 2/3rds tongue
Sensation to mucosa of floor of mouth and mandibular lingual gingivae

Question 17

Where is the lingual nerve

Answer 17

Joined by chorda tympani (branch of VII, infraterporal fossa)

Question 18

What is the innervation of the mucosa of anterior 2/3rds of tongue

Answer 18

Lingual branch of mandibular nerve general sensory
Chorda tympani branch of VII special sensory

Question 19

What is the innervation of the mucosa of posterior 1/3rd of tongue

Answer 19

IX lingual branch general and special sensory

Question 20

What is the innervation of the epiglottis and oesophagus

Answer 20

X superior laryngeal

Question 21

What is the innervation of tongue muscles

Answer 21

XII
Palatoglossus innervated by pharyngeal plexus (IX,X,XI)

Question 22

Where does the chorda tympani branch go

Answer 22

Leaves CN VII within facial canal of petrosal temporal bone and enters middle ear passes anteriorly across medial aspect of tympanic membrane and exits from skull through petrotympanic fissure
Passes anteriorly and inferiorly, medial to spine of sphenoid and joins posterior aspect of lingual nerve deep to inferior border of lateral pterygoid m continues as part of lingual nerve and is carried to FOM

Question 23

What is the location of the otic ganglion

Answer 23

Infratemporal fossa just below foramen ovale

Question 24

What is the innervation of the parotid gland

Answer 24

Parasympathetic components of glossopharyngeal nerve from otic ganglion

Question 25

Where is the retromolar fossa

Answer 25

Lies immediately behind last mandibular molar just under mucosa