muscles of the face (facial expressions)

Question 1

what does ipsilateral mean?

Answer 1

same side

Question 2

what does contralateral mean?

Answer 2

occurring on a part on the opposite side of the body. (moving torso in other direction)

Question 3

what does bilateral mean?

Answer 3

both sides moving at the same time

Question 4

what does unilateral mean?

Answer 4

one muscle is contracting at once. (single limb movement).

Question 5

occipitofrontalis
it is a combination of which 2 muscles?

Answer 5

Occipitalis & frontalis

Question 6

what is another name for occipitofrontalis?

Answer 6

epicranium

Question 7

Frontalis (OIA)

Answer 7

O: epicranial aponerosis
I: Fascia and skin of the eyebrow, root of the nose
A: elevates the eyebrows and wrinkles of the head

Question 8

occipitalis (OIA)

Answer 8

O: superior nuchal line of the occipital bone, petrous part of temporal bone
I: epicranial aponerosis
A: pulls scalp posteriorly (back of head)

Question 9

corrugator supercilii

Answer 9

O: medial end of the supraciliary arch of the frontal bone
I: skin of the eyebrow
A: draws eyebrows together and inferiorly (angry face). Wrinkles skin of the forehead vertically

Question 10

orbicularis oculi

Answer 10

Round muscle around the eye
O: frontal and maxillary bones and ligaments around the orbit
I: tissue of the eyelid
A: closes eye

Question 11

orbicularis oris

Answer 11

Circular muscle around mouth
O: fibers of other msucles associated with lip movements
I: muscles and skin at the angle of the mouth
A: purses and protrudes lips

Question 12

zygomatic major & minor

Answer 12

goes down at an angle
O: zygomatic bone
I: skin and muscle (orbicularis oris) at the angle of the mouth
A: raises angle of the mouth upwards
It attaches at the top of the (2 o clock ish) orbicular oris

Question 13

Buccinator

Answer 13

O: alveolar processes of the maxilla and internal surface of the mandible
I: orbicular oris
A: compresses the cheek (for whistling), draws angle of mouth laterally
It is a deeper muscle that passes kind of horizontally

Question 14

Risorius

Answer 14

(friend of the buccinator)
O: lateral fascia of the masseter
I: skin at the angle of the mouth
A: draws corners of the lips laterally

Question 15

mentalis

Answer 15

(chin muscle)
O: mandible inferior to incisors
I: skin of the chin
A: protrudes lower lip and wrinkles skin of the skin.
(Sad baby face, bottom lip out).

Question 16

Platysma

Answer 16

(muscle on the front of the throat)
O: fascia of the chest (superficial to pectoralis major)
I: inferior border of the mandible
A: tenses the skin of the neck: assists with cervical flexion