Muscles of Facial Expression Flashcards

1
Q

What are the functions of the muscles of facial expression?

A
  • emotional expression
  • sphincters and dilators of facial orifices
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are all muscles of facial expression innervated by?

A
  • facial nerve (CN VII)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the five groups/categories of muscles of facial expression?

A
  • orbital (+ scalp)
  • oral
  • nasal
  • auricular
  • platysma
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Orbicularis Oculi

A
  • orbital group of facial expression muscles
  • palpebral part gently closes eyelid
  • orbital part forcefully closes eye
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Occipitofrontalis

A
  • frontal belly raises and wrinkles eyebrows
  • occipital belly retracts the scalp
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the layers of the scalp?

A
  • Skin
  • Connective tissue (dense, richly vascularized)
  • Aponeurosis and muscle (i.e. occipitofrontalis)
  • Loose connective tissue
  • Pericranium/periosteum
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Zygomaticus major

A
  • draws corners of mouth superior and lateral
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the oral group muscles of facial expression?

A
  • zygomaticus major
  • depresspor anguli oris
  • levator labii superioris
  • orbicularis oris
  • buccinator
  • modiolus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Depressor anguli oris

A
  • draws corners of mouth inferior and lateral
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Levator labii superioris

A
  • raises upper lip
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Orbicularis oris

A
  • closes oral fissure
  • protrudes lips
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Buccinator

A
  • presses cheek against teeth
  • resists distention of cheek
  • works with tongue to position food on teeth
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Modiolus

A
  • central tendinous connection of muscles at the corner of the mouth
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What pierces the buccinator?

A
  • parotid duct
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What does the buccinator blend with?

A
  • orbicularis oris and lips
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Where does the buccinator originate from?

A
  • pterygomandibular raphe
  • maxilla
  • mandible