Face and Parotid

Question 1

Buccinator

Answer 1

ATTACHMENTS- from alveolar processes of the maxilla & mandible, pterygoid hamulus & pterygomandibular raphe to the buccal angle

FUNCTION- compresses cheek

INNERVATION- buccal branch of the facial n.

Question 2

Depressor anguli oris

Answer 2

ATTACHMENTS- from mandible to buccal angle

FUNCTION- depresses buccal angle laterally

INNERVATION- buccal & mandibular branch of the facial n.

Question 3

Frontalis

Answer 3

ATTACHMENTS- from the superficial fascia of the eyebrows to the epicranial aponeurosis

FUNCTION- protracts the scalp or elevates eyebrows & nose

INNERVATION- temporal branch of the facial n.

Question 4

Levator labii superioris

Answer 4

ATTACHMENTS- from the inferior orbital margin to the lateral aspect of the upper lip

FUNCTION- raises & everts upper lip

INNERVATION- buccal & zygomatic branches of the facial n.

Question 5

Nasalis

Answer 5

ATTACHMENTS- from the maxilla lateral & inferior to the nasal notch to the bridge & ala of the nose

FUNCTION- transverse fibers compress & alar fibers widen the nasal aperture

INNERVATION- buccal branch of facial n.

Question 6

Orbicularis oculi

Answer 6

ATTACHMENTS- from orbital margin & medial palpebral lig. to superficial fascia of the eyelid

FUNCTION- a palpebral sphincter (closes eyes)

INNERVATION- temporal & zygomatic branches of the facial n.

Question 7

Orbicularis oris MOUTH

Answer 7

ATTACHMENTS- from the angle of the mouth to the superficial fascia of the upper lip

FUNCTION- an oral sphincter (closes mouth)

INNERVATION- buccal & mandibular branches of the facial n.

Question 8

Platysma

Answer 8

ATTACHMENTS- from the lower border of the mandible to the superficial fascia of the skin of the neck overlying the clavicle

FUNCTION- wrinkles the anterior nuchal skin

INNERVATION- cervical branch of the facial n.

Question 9

Zygomaticus major

Answer 9

ATTACHMENTS- from zygomatic bone to angle of the mouth

FUNCTION- raises the buccal angle

INNERVATION- buccal & zygomatic branches of the facial n.

Question 10

What facial expression does Occipitofrontalis do?

Answer 10

raising eyebrows

Question 11

What facial expression does Orbicularis oculi do?

Answer 11

closing eye

Question 12

What facial expression does Levator labii superioris + alar part of nasalis do?

Answer 12

flaring nostrils

Question 13

What facial expression does buccinator and orbicularis oris do?

Answer 13

puffing the cheeks

Question 14

What facial expression does zygomaticus major and minor do?

Answer 14

smile

Question 15

What facial expression does levator labii superior + depressor labii do?

Answer 15

showing sadness

Question 16

What facial expression does risorius + levator labii superiorious + depressor labii inferioris do?

Answer 16

showing sadness

Question 17

What facial expression does orbicularis oris do?

Answer 17

pucker the lips

Question 18

What facial expression does depressor anguli oris do?

Answer 18

frown

Question 19

What facial expression does platysma do?

Answer 19

conveying tension or stress

Question 20

Which bones form the medial wall of the orbit?

Answer 20

Ethmoid bone and Lacrimal bone

Question 21

Which bones form the floor of the orbit?

Answer 21

maxilla and zygomatic bone

Question 22

Which bones form the lateral wall of the orbit?

Answer 22

Greater wing of sphenoid bone and zygomatic bone

Question 23

What forms the openings of the orbit?

Answer 23

• optic canal (sphenoid bone)
• superior orbital fissure
• inferior orbital fissure

Question 24

What are the sinus cavities of the skull?

Answer 24

The sinuses are air filled cavities that are lined by a mucus membrane
-they can be the site of pain or infection

Question 25

Where are the sinus cavities of the skull?

Answer 25

Frontal sinus Ethmoid sinus maxillary sinus

Question 26

What are the contents and function of the orbit?

Answer 26

Quadrilateral pyramids ``` contents: eyeball "globe" vessels nerves muscles orbital fat connective tissue ```

Question 27

Which bones form the roof of the orbit?

Answer 27

Frontal bone and lesser wing of sphenoid.