Face, Temporal and Infratemporal Regions

Question 1

Orbicularis Oculi

Answer 1

Attachment: Encircles eye
N: Facial Nerve
A: 1.  Forcefully closes eye
    2.  Encourages flow of tears
    3.  Squint

Question 2

Frontalis

Answer 2

Attachment: Part of scalp (no bone attachment)
N: Facial Nerve
A: 1. Elevates eyebrows
2. Wrinkle forehead

Question 3

Nasalis

Answer 3

Attachment: Runs transversely across nose
N: Facial Nerve
A: 1. Compresses and flares nostril
2. Draws nostril down

Question 4

Orbicularis Oris

Answer 4

Attachment: Encircles mouth
N: Facial Nerve
A: 1. Oral Sphincter
    2.  Lip Protrusion andCompression
    3.  Mastication and Pucker

Question 5

Levator Labii Superioris

Answer 5

O: 1.  Inferior to orbital
     2.  Lateral to Levator Labii Superioris Alaeque Nasi
I: Upper lip/orbicularis oris
N: Facial Nerve
A: 1.  Raises upper lip
    2.  Everts upper lip

Question 6

Levator Labii Superioris Alaeque Nasi

Answer 6

O: Very close to nose
I: Upper lip/orbicularis oris
N: Facial Nerve
A: Elevates alar cartilage of nose and upper lip

Question 7

Zygomaticus Major and Minor

Answer 7

O: Zygomatic Arch
I: Mouth
N: Facial Nerve
A: Pulls mouth corners upward and outward=SMILE

Question 8

Risorius

Answer 8

O: Fascia over parotid gland
I: Mouth
N: Facial Nerve
A: Pulls mouth corners upward and outward (backward)=SMILE

Question 9

Depressor Anguli Oris

Answer 9

O: Most lateral; Mandible
I: Mouth
N: Facial Nerve
A: Depresses corners of mouth

Question 10

Depressor Labii Inferioris

Answer 10

O: Mandible
I: Lip/Orbicularis Oris
N: Facial Nerve
A: Draws lips inferiorly and laterally

Question 11

Platysma

Answer 11

O: Supraclavicular and Infraclavicular Regions
I: 1. Base of mandible
   2. Orbicularis Oris
   3. Skin of Cheek
   4. Skin of lower lip
N: Facial Nerve
A: 1. Tenses skin of neck
    2.  Draws corners of mouth inferiorly
    3.  Assist in depressing mandible

Question 12

Buccinator

Answer 12

O: 1. Alveolar processes of mandible/maxilla
2. TMJ
I: Orbicularis Oris
N: Facial Nerve
A: 1. Aids in mastication and swallowing
2. Presses cheeks against molar teeth during chewing, whistling, and sucking

Question 13

Masseter

Answer 13

O: Inferior border and medial surface of zygomatic arch
I: 1. Lateral surface of ramus of mandible
2. Coronoid Process
N: Mandibular Division of Trigeminal Nerve (V3)
A: 1. Elevates and protrudes mandible
2. Deep fibers retrude

Question 14

Temporalis

Answer 14

O: 1. Temporal Fossa
2. Deep surface of Temporal Fossa
I: 1. Tip and medial surface of coronoid process
2. Ramus of Mandible
N: Mandibular Division of Trigeminal Nerve (V3)
A: 1. Elevates mandible
2. Posterior fibers retrude mandible after protrusion

Question 15

Medial Pterygoid

Answer 15

O: DEEP HEAD: Medial surface of lateral pterygoid plate
SUPERFICIAL HEAD: Tuberosity of Maxilla
I: Medial surface of ramus of mandible
N: Mandibular Division of Trigeminal Nerve (V3)
A: BILATERALLY: 1. Elevate mandible
2. Help to protrude mandible
ALTERNATIVELY: Produce grinding motion

Question 16

Lateral Pterygoid

Answer 16

O: SUPERIOR HEAD:
1. Infratemporal surface
2. Crest of greater wing of sphenoid bone
INFERIOR HEAD:
1. Lateral surface of lateral pterygoid plate
I: 1. BOTH heads insert at neck of mandible
2. SUPERIOR head also inserts to anterior part of articular disc and capsule of TMJ
N: Mandibular division of Trigeminal (V3)
A: BILATERALLY: Protrude mandible
ALONE/ALTERNATIVELY: Produce side to side movement of mandible
SUPERIOR HEAD: Works to eccentrically control POSTERIOR movement of disc during closing