66 Mandibular nerve (Arvin) Flashcards
Does the mandibular nerve has sensory or motor function?
They have both
The mandibular division enters the infratemporal fossa through ____
the foramen ovale.
Identify
- Lateral pterygoid n.
- Masseteric n. (cut)
- Anterior deep temporal n.
- Posterior deep temporal n.
- Mylohyoid n.
The motor branches of mandibular nerve include
- Anterior and posterior deep temporal
- Masseteric
- Medial pterygoid
- Lateral pterygoid
- Mylohyoid
The mandibular nerve comes from which cranial nerve?
Trigeminal nerve CN V
From the foramen ovale the main trunk of mandibular nerve comes out & divides into ___
Anterior and posterior divisions in the infra temporal fossa
Function of tensor tympani muscle
function: tensing of the tympanic membrane
From the foramen ovale the main trunk of mandibular nerve also gives out the branches which are ___ (3)
- Recurrent dural branch
- Tensor tympani nerve
- Tensor veli palatini
Recurrent dural branch Passes together with (1)____ (which artery) through foramen spinosum & innervates (2)____
- the middle meningeal artery
2. the posterior part of the dura in the middle cranial fossa
Tensor tympani nerve innervates ___
the tensor tympani muscle
Function of tensor tympani muscle
function: tensing of the tympanic membrane
Tensor veli palatini nerve innervates ___
Tensor veli palatini muscle
Function of Tensor veli palatini muscle
opens the auditory tube, assist in elevation of the soft palate, tenses the soft palate
Sensory Branches of the Mandibular Nerve
-> identify
- Auriculotemporal n.
- Lingual n.
- Inferior alveolar n.
- Buccal n.
- Posterior superior alveolar n.
The posterior superior alveolar n. (maxillary nerve) passes through ____ to enter the infratemporal fossa.
the pterygomaxillary fissure
Sensory Branches of the Mandibular Nerve
The posterior superior alveolar n. passes on the posterior surface of the maxilla and supplies ___ and ____
the maxillary sinus and maxillary molars.
Sensory Branches of the Mandibular Nerve
The buccal n. passes anteriorly between (1)____ and descends to supply (2)____
- the 2 heads of the lateral pterygoid
2. the skin over the buccinator.
Sensory Branches of the Mandibular Nerve
After passing through the skin over the buccinator, The buccal n. supplies the mucous membrane lining its inner surface and ____
the gingiva along the mandibular molars.
Sensory Branches of the Mandibular Nerve
The inferior alveolar n. descends and enters (1)_____ to innervate (2)____ and ____
- the mandibular foramen
2. all mandibular teeth and the soft tissue from the premolars anteriorly to the midline.
Sensory Branches of the Mandibular Nerve
The lingual n. lies medial and anterior to (1)____ (which nerve?) and is joined by (2)____
- the inferior alveolar n
2. the chorda tympani n.
Sensory Branches of the Mandibular Nerve
The lingual n. passes obliquely to enter the oral cavity to supply _____ and gingiva on the lingual aspect of the mandibular teeth
the mucous membrane of the anterior 2/3 of the tongue
Sensory Branches of the Mandibular Nerve
The auriculotemporal n. arises in the infratemporal fossa as 2 roots that surround the middle meningeal a. and enters (1)_____ as it travels superiorly to run with the superficial temporal vessels within (2)____ and eventually along the lateral aspect of the head.
- the temporal fossa
2. the parotid gland
Identify sensory innervation
Sensory
innervation of mandibular gingiva & mucosa:
- Outer (buccal) surface is innervated by ___
- Inner (lingual) surface is innervated by ____
1/ buccal & mental nerves
2/ lingual nerve
Identify
the inferior alveolar nerve between 1st & 2nd premolars gives a branch called as ____ through mental foramen?
mental nerve (through mental foramen)
After giving off mental nerve, the inferior alveolar nerve continue to move forward as ____
the incisive nerve
What does the incisive nerve supply?
innervates the canines & incisor
the inferior alveolar nerve between 1st & 2nd premolars gives a branch called as ____ through mental foramen?
mental nerve (through mental foramen)
What is pterygo-mandibular space?
The space which is situated between the medial pterygoid muscle and the medial surface of the ramus of the mandible.
Borders of the pterygo-mandibular space
4) Lateral pterygoid muscle
5) Medial pterygoid muscle
6) Ramus of the mandible
7) Pterygomandibular space
Contents of the pterygo-mandibular space
1) Inferior alveolar nerve
2) Lingual nerve
3) Buccal nerve
