Exam II lecture VI

Question 1

Platysma origin/insertion

Answer 1

O- SubQ of infraclavicular/supraclavicular regions

I- Base of mandible, cheek skin, lower lip, mouth angle

Question 2

Platysma action

Answer 2

Depresses mandible, tenses skin of inferior face/neck

Question 3

Occipitofrontalis origin/inserition

Answer 3

O- anterior epicranial aponeurosis

I- posterior superior nuchal line

Question 4

Occipitofrontalis action

Answer 4

Elevates eyebrows, protracts scalp

Question 5

Orbicularis oculi action

Answer 5

Closes eyelids

Question 6

Procerus origin/insertion

Answer 6

O- facial aponeurosis, lateral nasal cartilage

I-skin between eyebrows

Question 7

Procerus action

Answer 7

Depresses medial sides of eyebrows and wrinkles skin over dorsum of nose

Question 8

Nasalis origin/insertion

Answer 8

O- frontal processes of maxillae

I- alar cartilage

Question 9

Nasalis action

Answer 9

Depresses alae laterally and dilates anterior nasal aperture

Question 10

Orbicularis oris origin/insertion

Answer 10

O-medial maxilla/mandible, deep skin around mouth

I- Mucosa of lips

Question 11

Orbicularis oris action

Answer 11

Closes oral fissure, compresses/protrudes lips

Question 12

Levator labii superioris origin/insertion

Answer 12

O- infraorbital margin

I- Skin of upper lip

Question 13

Levator labii superioris action

Answer 13

Part of dilators of mouth

Question 14

Zygomaticus minor origin/insertion

Answer 14

O- anterior part of zygomatic bone

I- skin of upper lip

Question 15

Zygomaticus minor action

Answer 15

Part of dilators of mouth

Question 16

Zygomaticus major origin/insertion

Answer 16

O- Lateral part of zygomatic bone

I- Angle of mouth

Question 17

Zygomaticus major action

Answer 17

Elevates labial commissures (corner of mouth)

Question 18

Risorius origin/insertion

Answer 18

O- Parotid fascia and buccal skin

I- Angle of mouth

Question 19

Risorius action

Answer 19

Depresses labial commissures

Question 20

Depressor anguli oris origin/insertion

Answer 20

O-Anterolateral base of mandible

I- Angle of mouth

Question 21

Depressor anguli oris action

Answer 21

Depresses labial commissures

Question 22

Depressor labii inferioris origin/insertion

Answer 22

O- Platysma and mandible

I- Skin of lower lip

Question 23

Depressor labii inferioris action

Answer 23

Mouth dilator, depresses and everts lower lip

Question 24

Facial artery is a branch of

Answer 24

External carotid artery

Question 25

Branches of the facial artery include

Answer 25

Superior/inferior labial arteries
Lateral nasal artery
Angular artery

Question 26

Superficial temporal artery is terminal branch from

Answer 26

External carotid

Question 27

Superficial temporal artery route

Answer 27

Emerges between TMJ and auricle
Enters temporal fossa
Divides into frontal and parietal branches

Question 28

Transverse facial artery arises from

Answer 28

Superficial temporal artery

Question 29

Transverse facial artery anastomosis with

Answer 29

Facial artery

Question 30

Transverse facial artery branches supply

Answer 30

Parotid gland
Masseter muscle
Skin of face

Question 31

Sensory innervation to face is via

Answer 31

Trigeminal nerve

Question 32

Branches of trigeminal nerve

Answer 32

Opthalamic
Maxillary
Mandibular

Question 33

Opthalamic branch of trigeminal passes through

Answer 33

Superior orbital fissure

Question 34

Maxillary branch of trigeminal passes through

Answer 34

Foramen rotundum

Question 35

Mandibular branch of trigeminal passes through

Answer 35

Foramen ovale

Question 36

What nerve is primary motor nerve to facial expression muscles

Answer 36

Cranial nerve VII

Question 37

What does cranial nerve VII pass through

Answer 37

Stylomastoid foramen