Muscles of the Face

Question 1

two muscles located superior to the orbits of the eye and comprise the musculature of the fore head, which are involved with the elevation of the eyebrows

Answer 1

Frontalis

Question 2

Circular muscle surround the orbit of the eye. Made up of two parts

1. courses around the periphery of the eye orbit
2. comprises the musculature of the eyelids and is responsible for blinking actions

Answer 2

Orbicularis Oculi

1. Orbital Part
2. Palpebral Part

Question 3

located superior to the mouth and course supriorly along either side of the nose. These muscles are typically involved in elevation of the upper lip.

Answer 3

Levator Labii Superioris Muscles

Question 4

two muscles that are involved with elevation of the corners of the mouth upon smiling

Answer 4

Zygomaticus Major

Zygomaticus Minor

Question 5

this muscle inserts upon the corners of the mouth and like zygomaticus major and minor, is also involved with the elvation of the corners of the mouth upon smiling

Answer 5

Risorius

Question 6

circular muscle surround the mouth that is involved with contracting the lipds

Answer 6

Orbicularis Oris

Question 7

superficial neck muscle which orginates along the clavipectoral fascia and inserts at the inferior border of the body of the mandible. The action is to elevate the skin of the neck.

Answer 7

Platysma

Question 8

What is the origin, insertion, action and innervation of the temporalis?

Answer 8

Oirgin: frontal, parietal and temporal bones along the squamos suture

Insertion: coronoid process of the mandile

Action: elevation of the mandible

Innervation: mandibulaar branch of the trigeminal n

Question 9

muscles located internal to the cheeks and are primarily responsible for keeping the food bolus adjacent to the molar teeth during mastication

Answer 9

Buccinaator Muscles

Question 10

what is the origin, insertion, action and innervation of the masseter?

Answer 10

origin: zygomatic bone
insertion: external ramus and angle of the mandible

Action: elevation of the mandible

Innnervation: mandibular branch of the trigeminal n

Question 11

this muscle originate along the mandible and insert at the lower margins of the corners of the mouth. They depress the corners of the mouth

Answer 11

depressor anguli oris

Question 12

two muscles located inferior to the lower lips. These muscles act to depress the lower lip

Answer 12

Depressor Labii Inferioris

Question 13

muscles located superior to the nasal bones and are typically involved with furrowing the brow.

Answer 13

procerus

Question 14

all muscles of facial expression are innervated by what?It exhibits the cranial base through the internal acoustic meatus and divides into 5 distint branches which are?

Answer 14

1. Facial Nerve (Cranial Nerve VII)
2. 5 distinct branches
   - temporal
   - zygomatic
   - buccal
   - mandibular
   - cervical

Question 15

What is the origin, insertion, action and innervation of the medial and lateral pterygoids?

Answer 15

Origin: plates of the sphenoid bone

Insertion: internal surface of the angle of the mandible and condylar process of the mandible respectively

Action: medial and lateral grinding movements

Innervation: Madibular branch of the trigeminal n