Muscles

Question 1

What are the components of TMJ

Answer 1

Mandibular Condyle
Articular Fossa and Eminence
Articular Disc

Question 2

Mandibular Condyle: greater dimension _____

Answer 2

mediolateral

Question 3

Articular Fossa..nonfunctioning or functioning portion?

Answer 3

nonfunctioning

Question 4

Articular eminence…nonfunctioning or functioning portion?

Answer 4

functioning

Question 5

What is maximum intercuspation related to?

Answer 5

Articular disc

Question 6

What are elastic bands that support joint and limit movement (they do not move the joint)?

Answer 6

Ligaments

Question 7

What are the 4 ligaments/capsules in the face?

Answer 7

Fibrous capsule
Lateral ligament
Stylomandibular ligament
Sphenomandibular ligament

Question 8

Is fibrous capsule more posterior or anterior of lateral ligament?

Answer 8

Posterior to the lateral ligament.

Question 9

Which ligament is attached to the styloid process?

Answer 9

Stylomandibular ligament

Question 10

Name the muscles of mastication

Answer 10

Masseter
Temporalis
Medial Pterygoid
Lateral Pterygoid

Question 11

Which muscle elevates mandible? (close teeth together)

Answer 11

Masseter muscles

Question 12

Zygomatic Arch is which muscles origin?

Answer 12

Masseter muscles

Question 13

Lateral surface of Rami and angle of mandible is which muscles insertion?

Answer 13

Masseter muscles

Question 14

____ arch is the masseter muscles origin

Answer 14

Zygomatic

Question 15

What is the insertion for the masseter muscles?

Answer 15

Lateral surface of rami and angle of mandible

Question 16

What is the function of the temporalis muscles

Answer 16

To elevate and position (retrude) mandible

Question 17

Which fibers elevate mandible and close teeth?

Answer 17

Anterior fibers of the temporalis muscles

Question 18

____ fibers retrude mandible

Answer 18

Posterior fibers of the temporalis muscles

Question 19

What are the two kinds of fibers that the temporalis muscle has?

Answer 19

Anterior and Posterior

Question 20

____ ____ on cranium is the origin of temporalis muscles

Answer 20

Temporal fossa

Question 21

What are the insertions of temporalis muscles?

Answer 21

Coronoid process, anterior border of ramus, and temporal crest

Question 22

Coronoid process, anterior border of ramus, and temporal crest are the origin or insertion for temporalis muscles?

Answer 22

Insertion

Question 23

What is the function of medial pterygoid muscles?

Answer 23

Elevate mandible

Question 24

___ ___ is origin for medial pterygoid muscle

Answer 24

Pterygoid fossae

Question 25

Pterygoid fossa is the insertion or origin for which muscle?

Answer 25

Origin and medial pterygoid muscle

Question 26

What is the insertion for medial pterygoid muscle?

Answer 26

Medial Angle Mandible

Question 27

Medial angle mandible is the insertion for which muscle?

Answer 27

medial pterygoid muscle

Question 28

Function of lateral pterygoid muscle

Answer 28

One alone moves mandible laterally | Together: protude, depress mandible

Question 29

What are the 2 origins for lateral pterygoid muscle?

Answer 29

Lateral pterygoid plate (sphenoid) and greater wing

Question 30

Lateral pterygoid plate and greater wing are the insertion or origin for which muscle?

Answer 30

Origin, lateral pterygoid muscle

Question 31

What are the 2 insertions for lateral pterygoid muscle?

Answer 31

Pterygoid fovea (condylar process) and anterior part of articular disc

Question 32

Pterygoid ___ and ___ part of articular disc are the insertions for lateral pterygoid muscle

Answer 32

Fovea (condylar process) and anterior

Question 33

Geniohyoid, mylohyoid, and digastric are apart of what muscle group?

Answer 33

Suprahyoids

Question 34

What are 3 muscles associated with suprahyoids?

Answer 34

Geniohyoid Mylohyoid Digastric

Question 35

Omohyoid and sternohyoid are apart of what muscle group?

Answer 35

Infrahyoids

Question 36

What are 2 muscles associated with the infrahyoids?

Answer 36

Omohyoid and sternohyoid

Question 37

What is the function if suprahyoids and infrahyoids work together

Answer 37

Open mouth, depress mandible

Question 38

What are the 3 muscles that are associated with the upper lip for facial expression?

Answer 38

Zygomaticus Levator labii sup. Levator anguli oris

Question 39

What are the 3 muscles that are associated with the lower lip for facial expression?

Answer 39

Depressor labii inf. Depressor anguli oris Mentalis

Question 40

What are the 8 muscles associated with facial expression?

Answer 40

``` Orbicularis oris Buccinator m. Zygomaticus Levator labii sup. Levator anguli oris Depressor labii inf. Depressor anguli oris Mentalis ```

Question 41

Depressor labii inf., Depressor anguli oris, and Mentalis are associated with which lip? (lower or upper)

Answer 41

Lower

Question 42

Zygomaticus, Levator labii sup., and Levator anguli oris are associated with which lip (Lower or upper)?

Answer 42

Upper

Question 43

Masseters, medial pterygoids, and temporalis (anterior vertical and middle fibers) control which function of the mandible? (elevation, depression, or retrustion)

Answer 43

Elevation

Question 44

Suprahyoids, infrahyoids, and both lateral pterygoids control which function of the mandible?

Answer 44

Depression

Question 45

What are the 3 muscles that control elevation of the mandible?

Answer 45

Masseters, medial pterygoids, and temporalis

Question 46

What are the 3 muscles that control depression of the mandible?

Answer 46

Supra- and infrahyoids together | Both lateral pterygoids

Question 47

What are the muscles with retrusion of the mandible?

Answer 47

Temporalis: posterior horizontal fibers | Suprahyoids (with help from infrahyoids)

Question 48

Which muscles control protrusion of the mandible?

Answer 48

Both lateral pterygoids simultaneously

Question 49

Both lateral pterygoids simultaneously control which function of the mandible?

Answer 49

protrusion

Question 50

Lateral excursion of mandible: which muscles?

Answer 50

Right lateral pterygoid moves mandible to left; left lateral pterygoid moves mandible to right

Question 51

Innervation of muscles of mastication

Answer 51

Trigeminal (CN V) division III, MANDIBULAR BRANCH

Question 52

Innervation of Muscles of Facial Expression

Answer 52

Facial (CN VII)