[ANAT] TEMPOROMANDIBULAR JOINT

Question 1

tmj type

Answer 1

synovial-condylar

Question 2

head of mandible articulates with

Answer 2

mandibular fossa
articular tubercle

Question 3

articular surfaces are covered by

Answer 3

fibrocartilage

Question 4

capsule is attached to

Answer 4

margins of articular surfaces

Question 5

fibrous capsule is lined by

Answer 5

synovial membrane

Question 6

articular disk is formed of

Answer 6

fibrocartliage

Question 7

articular disk upper surface is

Answer 7

concavo-convex

Question 8

articular disk lower surface is

Answer 8

concave

Question 9

articular disk upper surface fits

Answer 9

mandibular fossa

Question 10

articular disk lower surface fits

Answer 10

head of mandible

Question 11

which structures are attached to the articular disk

Answer 11

fibrous capsule
tendon of lateral pterygoid

Question 12

joint cavity is divided into upper & lower compartment by

Answer 12

articular disk

Question 13

temporo-mandibular ligament is attached to

Answer 13

1- on root of zygomatic process
2- outer surface of neck of mandible

Question 14

role of temporo-mandibular ligament

Answer 14

1-limits posterior movement &
2-prevents posterior dislocation
3-protects external auditory meatus

Question 15

stylomandibular ligament extends from

Answer 15

apex of styloid process—> angle of mandible

Question 15

stylomandibular ligament extends from

Answer 15

apex of styloid process—> angle of mandible

Question 16

structures separated by stylomandibular ligament

Answer 16

parotid gland & submandibular gland

Question 17

ligament posterior to capsule

Answer 17

stylomandibular ligament

Question 18

ligament lateral to capsule

Answer 18

temporo-mandibular ligament

Question 19

stylomandibular ligament is a condesation of

Answer 19

investing layer of deep cervical fascia

Question 20

ligament medial to capsule

Answer 20

spheno-mandibular ligament

Question 21

condesation of investing layer of deep cervical fascia

Answer 21

stylomandibular ligament

Question 22

embryological remnants of 1st pharyngeal arch

Answer 22

sphenomandibular ligament

Question 23

sphenomandibular ligament extends from

Answer 23

spine of sphenoid—>lingula of mandibular foramen

Question 24

position of jaws when closed

Answer 24

occlusal position

Question 25

at rest, the 2 jaws are separated by

Answer 25

minimal interval

Question 26

blood supply of TMJ

Answer 26

superficial temporal artery
maxillary artery

Question 27

nerve supply of TMJ

Answer 27

auriculotemporal nerve
masseteric nerve

Question 28

dislocation of TMJ happens in which direction

Answer 28

anterior

Question 29

TMJ lies in front of which structure

Answer 29

external auditory meatus

Question 30

depression of mandible is initiated by

Answer 30

lateral pterygoid

Question 31

depression of mandible is assisted by

Answer 31

digastric
geniohyoid
mylohyoid
gravity

Question 32

elevation of mandible is performed by

Answer 32

temporalis
masseter
medial pterygoid

Question 33

protrusion of mandible is done by

Answer 33

masseter
medial pterygoid
lateral pterygoid

Question 34

retraction of mandible is done by

Answer 34

temporalis (post. fibers)

Question 35

side to side movement (chewing) is done by

Answer 35

medial & lateral pterygoid