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gross anatomy > tmj and mandibular nerve > Flashcards

tmj and mandibular nerve Flashcards

1
Q

ARTICULAR surfaces upper and lower of tmj

A

upper- articular tubercle of
- anterior part of mandibular fossa
-posterior non articular part of tympanic plate
lower- head of the mandible

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2
Q

ligaments of tmj

A

fibrous capsule, lateral temporomandibular ligament, sphenomandibular and stylomandibular

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3
Q

fibrous capsule

A

attached upwards to articular tubercle and below to the neck of the mandibile. it is lose above the intraacrticular disc and tight below

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4
Q

lateral ligament

A

strengthens and tightens the lateral part of capsular ligament
attached upwards to articular tubrcle and blow to the posterolateral part of neck of the mandible

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5
Q

sphenomandibular ligament

A

accessory ligament

attached to the spine of sphenoid and to the lingula of mandibular foramen

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6
Q

sphenomandibular ligament is related laterally and medially to

A

laterally- lateral pterygoid muscle
maxillary artery and auricotemporal nerve
medially- chorda tympani
wall of pharynx

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7
Q

stylomandibular ligament

A

represents the thickened part of deep cervical fascia which seperates the parotid gland and submanibular gland
atatched above to lateral part of styloid process and below to poasterior border of the ramus of the mandible

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8
Q

articular disc is composed of

A

anterior extensio, anterior thick band, intermediate zone, posterior thick band and bilaminar disk containing venous plexus

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9
Q

relations of tmj

lateral

A

skin and fascia
parotid gland
temporal branches of facial nerve

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10
Q

relations of tmj

medial

A 
MS CAT
middle meningeal artery 
styloid process
chorda tympani 
aurcotemporal nerve 
tympanic plate separates the joint from the internal carotid artery
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11
Q

relations of tmj

anterior

A

lateral pterygoid muscle

masseteric nerve and vessels

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12
Q

relations of tmj

posterior

A

superficial temporal
partodid gland seperates the joint from external acoustic meautus
chorda tympani

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13
Q

relations of tmj

superior

A

middle cranial fossa

middle menningeal vessels

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14
Q

relations of tmj

inferior

A

maxillary artery

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15
Q

blood supply of tmj and nerve supply

A

branches of maxillary artery (deep auricular) and branches of superficial temporal
auricotemporal nerve and masseteric nerve

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16
Q

Depression is brought by

A

lateral pterygoid with gemiohyoid mylohyoid and diagastric

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17
Q

elevation is Brought by

A

masseter, anterior vertical, middle oblique fibers of temporalis and medial pterygoid on both sides

18
Q

Protrusion is brought by

A

medial and lateral pterygoid and superficial oblique fibers of masseter

19
Q

REtraction is brought by

A

posterior horizontal of temporalis and deep vertical of masseter

20
Q

Mandibular nerve what is?

A

Branch of trigeminal nerve n nerve of First brachial arch

21
Q

Mandibular nerve course

A

begins in the middle cranial fossa.
2 roots sensory and motor
Leaves through formsnen ovale ans divides into small anterior trunk and large posterior trunk

22
Q

Branches from main trunk of mandibular nedve

A

nerve to medial pterygoid

Meningeal branch

23
Q

Branches from anterior trunk of mandibular nerve

A

Sensory root to buccal

Motor root to masseteric, deep temporal and lateral pterygoid

24
Q

Branches from posteriori truck of mandibular nerve

A

Auricotemporal
Inferior alveolar
Lingual

25
Q

Meningeal branch

A

Enters the skull through foramen spinosam

Supplies dura matter of middle cranial fossa

26
Q

Nerve to medial pterygoid

A

supplied medial pterygoid and gives motor root to tensor tympani, tensor veli palatini

27
Q

Buccal nerve

A

only sensory root . Supplies skin of cheek, mucous membrane related to buccinator and labial aspect of gums of molar and premolar teeth

28
Q

Masseteric

A

goes through mandibular notch supplied masseter and tmj

29
Q

Deep temporal

A

2 ant and post and supply deep surface of temporalis

30
Q

Erve to lateral pterygoid

A

supplied deep surface of the muscle

31
Q

Auricotemporal nerve

A

auricle part supplies skin of tragus upper part of pinna external acoustic meatus and tympanic membrane
Temporal part supplies the skin of temp,e
Also supplies parotid gland and tmj

32
Q

lingual nerve

A

sensory to anterior 2/3 of tongue and floor of the mouth and chorda tympani is secretomotor supply to submandibular and sublingual glands and gustatory to ant2/3rd of the tongue supplied by lingual nerve

33
Q

Inferior alveolar nerve

A

Larger terminal branch of mandibular never enters the mandibular foramen through mandibular canal

34
Q

Divisions of IA nerve

A

mylohyoid goes through mylohyoid grove and supplies the mylohyoid mucked and sent belly of diagastric
Branch to lower gum and teeth
Mental branch through mental foramen that supplies skin of skin and mucous membrane of lower lip. Incisive branch that supplies the labial aspect of gums of canines and incisors

35
Q

terminal branch of mandibular nerve

A

inferior alveolar nerve and buccal nerve

36
Q

cancer of the tongue is felt by (reffered pain)

A

auricotemporal nerve

as lingual and auricotemporal nerve both are a branch of mandibular nerve

37
Q

during wisdom tooth what nerve should be taken care of

A

lingual nerve

38
Q

paralysis of muscles of mastication, parasthesia of mandibile, tongue temporal region is caused by

A

lesion in foramen ovale

39
Q

loss of jaw jerk reflex is caused by

A

mandibular nerve

40
Q

extracting mandibular teeth u give anesthesia t what nerve

A

inferior alveolar nerve before it enters the mandibular canal

41
Q

fracture to mandible can cause damage to what nerve

A

inferior alveolar nerve

42
Q

injury to spine of sphenoid what 2 nerves are affected

A

chorda tympani and auricotemporal nerve

gross anatomy (16 decks)

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