Quiz 4: Skull

Question 1

Where is the Epicranius located?

Answer 1

Top half of the head

Question 2

What are the two area’s of the Epicranius?

Answer 2

Frontal belly
Occipital belly

Question 3

What is the origin of the frontal belly?

Answer 3

Skin of eyebrows, root of nose

Question 4

Where does the frontal belly insert?

Answer 4

Epicardial aponeurosis

Question 5

What action of the frontal belly perform?

Answer 5

Raises eyebrows

Question 6

Where does the occipital belly originate?

Answer 6

Occipital and temporal lobes

Question 7

Where does the occipital belly insert?

Answer 7

Epicranial aponeurosis

Question 8

What action does the occipital belly perform?

Answer 8

Pulls scalp

Question 9

What is the origin of orbicularis oculi?

Answer 9

Frontal and maxillary bones
Orbit ligaments

Question 10

Where does the orbicularis oculi insert?

Answer 10

Eyelid tissue

Question 11

What action does the orbicularis oculi perform?

Answer 11

Closes eye, blinking, squinting

Question 12

What is the origin of the zygomaticus major and minor?

Answer 12

Zygomatic bone infraorbital margin of maxilla

Question 13

Where does the zygomaticus major and minor insert?

Answer 13

Skin of the upper lip

Question 14

What action does the zygomaticus major and minor perform?

Answer 14

Raises/furrows upper lip
Opens lip

Question 15

What is the origin of the risorius?

Answer 15

Zygomatic bone

Question 16

What is the insertion of the risorius?

Answer 16

Skin and muscle at corner of the mouth

Question 17

What is the action of the risorius?

Answer 17

Draws corners of the lips laterally

Question 18

What is the origin of the orbicularis oris?

Answer 18

Arises directly from the maxilla and mandible

Question 19

What is the insertion of the orbicularis oris?

Answer 19

Encircles mouth

Question 20

What is the action of the obicularis oris?

Answer 20

Closes and protrudes lips

Question 21

What is the origin of the buccinator?

Answer 21

Deep to masseter

Question 22

What is the insertion of the buccinator?

Answer 22

molar region of the maxilla and mandible

Question 23

What is the action of the buccinator?

Answer 23

Maintains tightness of cheeck

Question 24

What is the origin of the mentalis?

Answer 24

Mandible below incisors

Question 25

What the the insertion of the mentalis?

Answer 25

skin of chin

Question 26

What is the action of the mentalis?

Answer 26

Protrudes lower lip, wrinkles chin

Question 27

What is the origin of the platysma?

Answer 27

fascia covering the clavicle

Question 28

What is the insertion of the platysma?

Answer 28

Mandible, cheek skin

Question 29

What is the action of platysma?

Answer 29

Pulls down the mandible opening the mouth

Question 30

What is the origin of the depresssor labii inferioris?

Answer 30

oblique line at base of jaw

Question 31

What is the insertion of the depressor labii inferioris?

Answer 31

Skin of lower lip

Question 32

What is the action of the depressor labii inferioris?

Answer 32

Depresses and elevates the lower lip

Question 33

What muscle is the prime mover for creating wrinkles in the forehead?

Answer 33

Epicranius

Question 34

What is the prime mover for blinking your eyes

Answer 34

obicularis oculi

Question 35

What is the prime mover for puckering your lips?

Answer 35

Risorius

Question 36

What is the prime mover of smiling?

Answer 36

Zygomaticus major

Question 37

What synovial joint is the tmj?

Answer 37

Condylar hinge joint

Question 38

What is the location and articulating surfaces of the TMJ joint?

Answer 38

Connects the mandible to the rest of the skill, condylar process of the mandible

Question 39

What are the movements associated with the TMJ joint?

Answer 39

Mandibular depression Elevation Lateral deviation

Question 40

What is the origin of the masseter?

Answer 40

zygomatic arch

Question 41

What is the origin of the temporalis?

Answer 41

temporal fossa

Question 42

What is the origin of the digastric?

Answer 42

mastoid process of temporal bone

Question 43

What is the origin of the medial pterygoid?

Answer 43

Pyramidal process of palatine bone, tuberosity of maxilla

Question 44

What is the origin of the lateral pterygoid?

Answer 44

Lateral surface of sphenoid bone

Question 45

What is the insertion of the masseter?

Answer 45

angle and lateral manibular surfaces

Question 46

What is the action of the masseter?

Answer 46

Lifting of the lower jaw

Question 47

What nerve innervates the masseter?

Answer 47

mandibular nerve

Question 48

What is the insertion of the temporalis?

Answer 48

apex and medial surface of coronoid process of manidble

Question 49

What is the action of the temporalis?

Answer 49

moves mandible up/back, side to side

Question 50

What nerve innervates the temporalis?

Answer 50

Mandubular nerve

Question 51

What inserts the digastric?

Answer 51

hyoid bone

Question 52

What inserts the medial pterygoid?

Answer 52

Ramus Mandibular angle

Question 53

What inserts the lateral pterygoid?

Answer 53

anterior side of the condyle

Question 54

What action does the digastric perform?

Answer 54

depresses mandible elevates hyoid bone

Question 55

What action does the medial pterygoid perform?

Answer 55

closing the jaw

Question 56

What action does the lateral pterygoid perform?

Answer 56

depresses and protrudes mandible

Question 57

When chewing, what muscles are involved?

Answer 57

Masseter - prime chewing muscle Temporalis - TMJ joint movement Medial/lateral pterygoid - elevates, depresses maxilla

Question 58

What is a fontanel?

Answer 58

Fibrous membranes connecting fetal skull bones