TMJ

Question 1

The __ suture separates the temporal bone from the parietal bone

Answer 1

squamous

Question 2

The lateral border of the infratemporal fossa is the medial side of the ___ of the ___

Answer 2

ramus of the mandible

Question 3

The medial border of the infratemporal fossa is the lateral portion of the ___ plate.

Answer 3

pterygoid

Question 4

The anterior border of the infratemporal fossa is the posterior aspect of the __ bone.

Answer 4

maxilla

Question 5

The posterior border of the infratemporal fossa is the ___ plate.

Answer 5

tympanic

Question 6

The ___ fossa is the concave superior portion/surface of the posterior TMJ.

Answer 6

mandibular

Question 7

The ___ tubercle is part of the superior surface of the anterior TMJ and is convex.

Answer 7

articular

Question 8

On the superior portion of the TMJ, we have the inferior portion of the __ arch and ___ bone where it is going from concave to convex.

Answer 8

zygomatic; temporal

Question 9

The _____ process is involved in the movement of the TMJ.

Answer 9

styloid

Question 10

The ramus has a ___ process.

Answer 10

condylar

Question 11

A ___ process has a head and a neck

Answer 11

condylar

Question 12

The condylar process is the (superior/inferior) portion of the TMJ

Answer 12

inferior

Question 13

(Anterior/Posterior) to the condylar process is the ____ process of the TMJ

Answer 13

Anterior; coronoid

Question 14

The coronoid process of the TMJ is an attachment site to the ____ muscle

Answer 14

temporalis

Question 15

Between the condylar process and the coronoid process is the ____ notch.

Answer 15

mandibular

Question 16

If we follow our way down the vertebral ramus to where it almost turns 90 degrees, that turning point is known as the ___ of the mandible.

Answer 16

angle

Question 17

Inside of the ramus there is an area with a bony process called the ____. It is a small bony process at the entrance of the mandibular foramen.

Answer 17

lingula

Question 18

The mandibular foramen is the entrance to the ____ nerve.

Answer 18

inferior alveolar

Question 19

The pars alveolaris is the sockets that our ___ go in

Answer 19

teeth

Question 20

The _____ nerve runs right underneath the pars alveolaris

Answer 20

inferior alveolar

Question 21

The ___ nerve provides sensory input to the teeth and also provides sensory input as it exits the mental foramen in which it changes its’ name to the ___ nerve

Answer 21

inferior alveolar; mental

Question 22

The __ nerve supplies sensory input to the skin of the chin and the anterior portion of the lower jaw

Answer 22

mental

Question 23

The TMJ has a joint capsule so it is a ___ joint

Answer 23

synovial

Question 24

The TMJ has a ligament that is called the ___ ligament and provides lateral reinforcement of the capsule

Answer 24

lateral

Question 25

Typically the articular surface of a joint is covered by hyaline cartilage, the TMJ is covered by ____ which indicates that it has to resist compressive and shear forces.

Answer 25

fibrocartilage

Question 26

The TMJ capsule has an outer fibrous layer and an inner synovial layer and it is supported by the thick strong ___ ligament

Answer 26

lateral

Question 27

In-between the two joint spaces in the TMJ there is an intraarticular disk and this disk is not made like normal fibrocartilaginous disks. This disk is made up of a form of (loose/dense) fibrous connective tissue and some fibrocartilage.

Answer 27

dense

Question 28

In most cases the intraarticular disk of the TMJ is (complete/incomplete) and it creates a superior cavity and an inferior cavity.

Answer 28

complete

Question 29

From the disk to the temporal bone is a (loose/tight) capsule and from the disk to the mandibular bone is a (loose/tight) capsule and that is important as you learn the arthrokinematics

Answer 29

loose; tight

Question 30

On the posterior portion of the articular disk it has what is called ____ tissue. This tissue attaches to the (anterior/posterior) aspect of the disk and capsule. The retrodiscal tissue is considered (loose/tight).

Answer 30

retrodiscal; posterior; loose

Question 31

The retrodiscal tissue will resist (anterior/posterior) disk movement but remember it is loose so it will allow some (anterior/posterior) movement.

Answer 31

anterior; anterior

Question 32

Anteriorly, the retrodiscal tissue is attached firmly to the ___ and a portion of the (medial/lateral) pterygoid tendon.

Answer 32

capsule; lateral

Question 33

The superior head of the lateral pterygoid has an attachment to the ___.

Answer 33

articular disk

Question 34

The inferior head of the lateral pterygoid attaches to the _____

Answer 34

mandible

Question 35

The medial and lateral portions of the articular disk are firmly attached to the ____ .

Answer 35

capsule

Question 36

The retrodiscal tissue is made up of collagen fibers, elastin fibers, fat, blood vessels, and sensory nerves. So all of these things are on the (anterior/posterior) aspect of the disk.

Answer 36

posterior

Question 37

The ____ ligament runs from the sphenoid bone to the lingula of the mandible.

Answer 37

sphenomandibular

Question 38

The ____ ligament runs from the styloid process to the angle of the mandible

Answer 38

stylomandibular

Question 39

The _____ ligament and the _____ ligament suspend the mandible from the skull and they play a role in the motion of the TMJ.

Answer 39

sphenomandibular; stylomandibular

Question 40

The ___ muscle runs from the temporal fossa to the coronoid process

Answer 40

temporalis

Question 41

The temporalis muscle is a strong (elevator/depressor) and (protractor/retractor) of the mandible

Answer 41

elevator; retractor

Question 42

On the lateral side of the mandible running up to the zygomatic arch we have the ___ muscle and it is a very strong elevator of the mandible

Answer 42

masseter

Question 43

The (medial/lateral) pterygoid muscle is coming off of the sphenoid bone and runs to the condylar head and the disk of the TMJ

Answer 43

lateral

Question 44

The medial pterygoid is named the MEDIAL pterygoid because it is medial to the ___ bone.

Answer 44

sphenoid

Question 45

The medial pterygoid is more (medial/lateral) on the sphenoid bone and is running to the (medial/lateral) side of the ramus of the mandible

Answer 45

medial; medial

Question 46

The lateral pterygoid is a little more lateral to the sphenoid bone and it is more (anterior/posterior) in its’ line of pull to the mandible, when it contracts it does a good job of (protruding/retracting) the mandible

Answer 46

posterior; protruding

Question 47

When the lateral pterygoid protrudes the mandible it brings the disk (anteriorly/posteriorly).

Answer 47

anteriorly

Question 48

The medial pterygoid has a more downward alignment of its fibers and helps in (elevation/depression) of the mandible

Answer 48

elevation

Question 49

The medial and lateral pterygoids work (individually/together) to perform a vast array of movements of the mandible

Answer 49

together

Question 50

When you open up the jaw you are going to see the ____ artery and the branch of the ___ artery

Answer 50

maxillary; external carotid

Question 51

Anterior to the inferior alveolar nerve is another branch of the mandibular nerve called the ____ nerve

Answer 51

lingual

Question 52

The lingual nerve (does/does not) enter the mandible

Answer 52

does not

Question 53

The mandibular nerve runs right along the (medial/lateral) pterygoid

Answer 53

medial

Question 54

The ___ nerve runs underneath the tongue outside of the mandible on the medial side.

Answer 54

lingual

Question 55

The chorda tympani joins with the ___ nerve and they are going to run underneath the tongue to supply general sensation to the anterior 2/3 of the ___ .

Answer 55

lingual ; tongue