Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Lecture 15 > Facial Expression muscle > Flashcards

Facial Expression muscle Flashcards

1
Q

What are facial muscles?

A

muscles located in the subcutaneous tissue of the face which insert into the skin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What arch do the facial muscles develop from?

A

Second pharyngeal arch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the three groups of the Facial muscles?

A

Orbital
Nasal
Oral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are orbital Muscles?

A

Two muscles which are in relation to the eye socket which control the eyelids, protecting the cornea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the two Orbital muscles?

A

Orbicularis Oculi
Corrugator Supercilii

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the Orbicularis Oculi muscle?

A

Muscle that surrounds eye socket and extends into eye lids with three distinct parts, lacrimal, palpebral and orbital

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the origin points of the Orbicularis Oculi muscle?

A

Lacrimal Part: Lacrimal Bone
Orbital Part: Medial Orbital Margin
Palpebral Part: Medial Palpebral Ligament

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the insertion of the parts of the Orbicularis Oculi muscle?

A

Skin around the orbit along with tarsal plates of eyelids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the function of the Orbicularis Oculi muscle?

A

Lacrimal Part: Involved in drainage of tears
Palpebral Part: Gently closes eyelids
Orbital Part: Tightly closes eyelids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the Corrugator Supercilii muscle?

A

Much smaller muscle located posteriorly to the Orbicularis Oculi muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the origin of the Corrugator Supercilii muscle?

A

Superciliary arch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the insertion of the Corrugator Supercilii muscle?

A

Inserts into the skin of the eyebrows

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the action of the Corrugator Supercilii muscle?

A

Pulls the eye brows together forming vertical wrinkles

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

What is the clinical relevance of the Orbital muscles paralysis?

A

The eye cannot shut causing the cornea to dry out in a process known as exposure keratitis.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the Nasal muscle group?

A

Muscles associated with moving the nose and skin surrounding it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How many muscles are in the Nasal muscle group?

A

Three, namely;

Nasalis
Procerus
Depressor Septi Nasi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the Nasalis muscle?

A

largest of the nasal muscles which is comprised of two parts; the transverse and alar

18
Q

What is the origin of the nasalis muscle?

A

Transverse Part: Originates from Maxilla, lateral to nose
Alar Part: Maxilla, overlaying lateral incisor

19
Q

What is the insertion of the nasalis muscle?

A

Transverse part: aponeurosis across the dorsum of the nose
Alar Part: alar cartilage of the nasal skeleton

20
Q

What is the action of the nasalis muscle?

A

Transverse part: Compresses nasal opening
Alar part: Widens nasal opening

21
Q

What is the Procerus muscle?

A

Most superior nasal muscle which lies superficial to the facial muscles

22
Q

What is the origin of the Procerus muscle?

A

Nasal bone

23
Q

What is the insertion of the Procerus muscle?

A

Skin of lower medial forehead

23
Q

What is the action of the Procerus muscle?

A

Pulls eyebrows downwards to produce Transverse wrinkles all over the nose

24
Q

What is the origin of the Depressor Septi Nasi?

A

Maxilla, above medial incisor tooth

25
Q

Where does the Depressor Septi Nasi insert?

A

Nasal Septum

26
Q

What is the action of the Depressor Septi Nasi?

A

Pulls nasal septum inferiorly to widen nasal opening

27
Q

What is the Oral Group of fascial muscle?

A

Muscles responsible for movements of the mouth and lips

28
Q

What are the Oral group?

A

They consists of :

Orbicularis Oris
Buccinator
Minor Oral Muscles

29
Q

What is the Orbicularis Oris muscle?

A

Main sphincter muscle of the lips

30
Q

What is the origin of the Orbicularis Oris muscle?

A

Maxilla and other muscles of the cheek

31
Q

What is the insertion of the Orbicularis Oris muscle>

A

Skin and mucous membrane of the lips

32
Q

What is the action of the Orbicularis Oris muscle?

A

Close lips to narrow the oral opening

34
Q

What is the Buccinator?

A

A thin, square shaped muscle

35
Q

What is the origin of the Buccinator

A

Maxilla and Mandible

36
Q

What is the insertion of the Buccinator?

A

Into the skin along with the orbicularis oris

37
Q

What is the action of the Buccinator?

A

Pulls cheeks inwards against teeth, preventing accumulation of food

38
Q

What are the minor oral groups?

A

Group of minor muscles that act upon the lips and the mouth

39
Q

What is the lower group of the Minor Oral muscles?

A

Depressor Anguli Oris, Depressor Labii Inferioris, Mentalis

40
Q

What is the Upper group of the Minor Oral muscles?

A

Risorius, Zygomaticus Major, Zygomaticus Minor, Levator Labii superioris, levator labii superioris alaeque nasi and levator anguli oris

Lecture 15 (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions