Lecture 14 (Exam 2)

Question 1

What is the origin of the platysma?

Answer 1

SubQ of infraclavicular and supraclavicular regions

Question 2

What is the insertion of the platysma?

Answer 2

Base of mandible
Skin of cheek
Lower lip 
Angle of mouth
Orbicularis oris

Question 3

What actions does the platysma perform?

Answer 3

Depresses mandible

Tenses skin of inferior face and neck

Question 4

What is the origin of the occipitofrontalis?

Answer 4

Anteriorly from epicranial aponeurosis

Posteriorly from superior nuchal line

Question 5

What is the insertion of the occipitofrontalis?

Answer 5

Epicranial aponeurosis posteriorly

Skin and subQ of eyebrows and forehead anteriorly

Question 6

What actions does the occipitofrontalis perform?

Answer 6

Elevates eyebrows

Protracts scalp

Question 7

What is the origin of the orbicularis oculi?

Answer 7

Orbital margin
Palpebral ligament
Lacrimal bone

Question 8

What is the insertion of the orbicularis oculi?

Answer 8

Skin around margin of orbit

Tarsal plates

Question 9

What actions does the orbicularis oculi perform?

Answer 9

Closes eyelids

Question 10

What is the origin of the procerus?

Answer 10

Facial aponeurosis

Lateral nasal cartilages

Question 11

What is the insertion of the procerus?

Answer 11

Skin between eyebrows

Question 12

What actions does the procerus perform?

Answer 12

Depresses medial sides of eyebrows

Wrinkles skin over dorsum of nose

Question 13

What is the origin of the nasalis?

Answer 13

Frontal processes of maxillae

Question 14

What is the insertion of the nasalis?

Answer 14

Alar cartilage

Question 15

What actions does the nasalis perform?

Answer 15

Depresses alae laterally

Dilates anterior nasal aperture

Question 16

What is the origin of the orbicularis oris?

Answer 16

Medial maxilla and mandible

Deep surface of skin around mouth

Question 17

What is the insertion of the orbicularis oris?

Answer 17

Mucosa of lips

Question 18

What actions does the orbicularis oris perform?

Answer 18

Closes oral fissure

Compresses and protrudes lips

Question 19

What is the origin of the levator labii superioris?

Answer 19

Infraorbital margin

Question 20

What is the insertion of the levator labii superioris?

Answer 20

Skin of upper lip

Question 21

What actions does the levator labii superioris perform?

Answer 21

Part of dilators of mouth

Question 22

What is the origin of the zygomaticus minor?

Answer 22

Anterior part of zygomatic bone

Question 23

What is the insertion of the zygomaticus minor?

Answer 23

Skin of upper lip

Question 24

What actions does the zygomaticus minor perform?

Answer 24

Part of dilators of mouth

Question 25

What is the origin of the zygomaticus major?

Answer 25

Lateral part of zygomatic bone

Question 26

What is the insertion of the zygomaticus major?

Answer 26

Angle of mouth

Question 27

What actions does the zygomaticus major perform?

Answer 27

Elevates labial commissures (corner of mouth)

Question 28

What is the origin of the risorius?

Answer 28

Parotid fascia | Buccal skin

Question 29

What is the insertion of the risorius?

Answer 29

Angle of mouth

Question 30

What actions does the risorius perform?

Answer 30

Depresses labial commissures (corner of mouth)

Question 31

What is the origin of the depressor anguli oris?

Answer 31

Anterolateral base of mandible

Question 32

What is the insertion of the depressor anguli oris?

Answer 32

Angle of mouth

Question 33

What actions does the depressor anguli oris perform?

Answer 33

Depresses labial commissures (corner of mouth)

Question 34

What is the origin of the depressor labii inferioris?

Answer 34

Platysma | Anterolateral body of mandible

Question 35

What is the insertion of the depressor labii inferioris?

Answer 35

Skin of lower lip

Question 36

What actions does the depressor labii inferioris perform?

Answer 36

Mouth dilator | Depresses and everts lower lip

Question 37

This artery of the face is a branch of the external carotid artery. It winds around the lower border of the mandible and becomes superficial.

Answer 37

Facial artery

Question 38

The facial artery passes (LATERALLY/MEDIALLY) to the angle of the mouth.

Answer 38

Laterally

Question 39

What are the branches of the facial artery?

Answer 39

Superior and inferior labial arteries Lateral nasal artery Angular artery

Question 40

This artery of the face is a terminal branch of the external carotid artery. It emerges between the temporomandibular joint (TMJ) and auricle and enters the temporal fossa.

Answer 40

Superficial temporal artery

Question 41

The superficial temporal artery divides into ________ and ________ branches.

Answer 41

Frontal | Parietal

Question 42

This artery of the face arises from the superficial temporal artery. It crosses the face superficial to masseter muscle and anastomoses with the facial artery.

Answer 42

Transverse facial artery

Question 43

What do the branches of the transverse facial artery supply?

Answer 43

Parotid gland Masseter muscle Skin of face

Question 44

Sensory innervation of the face is via the _________ nerve (CN ____).

Answer 44

Trigeminal | V

Question 45

What are the three branches of the trigeminal nerve (CN V)?

Answer 45

Ophthalmic (V1) Maxillary (V2) Mandibular (V3)

Question 46

What are the other sensory nerves of the face?

Answer 46

Greater occipital nerve Lesser occipital nerve Great auricular nerve (Cervical plexus)

Question 47

The _______ nerve (CN _____) is the primary motor nerve to muscles of facial expression.

Answer 47

Facial | VII

Question 48

The facial nerve (CN VII) supplies muscle derived from the second ________ ________.

Answer 48

Pharyngeal arch (Hyoid arch)

Question 49

What are the branches of the facial nerve (CN VII)?

Answer 49

``` Temporal Zygomatic Buccal Mandibular Cervical ```