Muscle Anatomy: Facial muscles

Question 1

What are the facial muscles?

Answer 1

Frontalis, temporalis, occipitalis, zygomaticus, masseter, buccinator, sternocleidomastoid, orbicularis oculi, orbicularis oris

Question 2

Where do muscles of facial expression originate?

Answer 2

Surface of skull

Question 3

Where does the frontalis originate?

Answer 3

Aponeurosis of the skull

Question 4

Where is the insertion of the frontalis?

Answer 4

Skin of eyebrow and bridge of nose

Question 5

What action does the frontalis do?

Answer 5

Raises eyebrows, wrinkles forehead

Question 6

Where does the orbicularis oculi originate?

Answer 6

Medial margin of orbit

Question 7

Where is the insertion of the orbicularis oculi?

Answer 7

Skin around eyelids

Question 8

What action does the orbicularis oculi perform?

Answer 8

Closes the eye

Question 9

Where does the zygomaticus originate?

Answer 9

Zygomatic bone

Question 10

Where is the insertion of the zygomaticus?

Answer 10

Angle of mouth and upper lip

Question 11

What action does the zygomaticus perform?

Answer 11

Retracts and elevates corner of mouth and upper lip

Question 12

Where does the temporalis originate?

Answer 12

Along temporal lines of skull

Question 13

Where is the insertion of the temporalis?

Answer 13

Coronoid process of mandible

Question 14

What action does the temporalis perform?

Answer 14

Elevates mandible and closes the jaws

Question 15

Where does the masseter originate?

Answer 15

Zygomatic arch

Question 16

Where is the insertion of the masseter?

Answer 16

Lateral surface of mandibular ramus

Question 17

What action does the masseter perform?

Answer 17

Elevates the mandible and closes the jaws

Question 18

Where does the buccinator originate?

Answer 18

Alveolar process of maxillary bone and mandible

Question 19

Where is the insertion of the buccinator?

Answer 19

Fibers of orbicularis oris

Question 20

What action does the buccinator perform?

Answer 20

Compresses the cheeks

Question 21

Where does the orbicularis oris originate?

Answer 21

Maxillary bones and mandible

Question 22

Where is the insertion of the orbicularis oris?

Answer 22

Lips

Question 23

What action does the orbicularis oris perform?

Answer 23

Compresses, purses lips

Question 24

Where does the occipitalis originate?

Answer 24

Occipital and temporal bones

Question 25

Where is the insertion of the occipitalis?

Answer 25

Aponeurosis of scalp

Question 26

What action does the occipitalis perform?

Answer 26

Tenses and retracts scalp

Question 27

Where does the sternocleidomastoid originate?

Answer 27

Clavicle and manubrium

Question 28

Where is the insertion of the sternocleidomastoid?

Answer 28

Mastoid region of skull, temporal bone and adjacent portions of occipital bone

Question 29

What action does the sternocleidomastoid perform?

Answer 29

Flexes the neck, one alone bends heads towards shoulder and neck