7- Muscles of Facial Expression Flashcards Preview

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Flashcards in 7- Muscles of Facial Expression Deck (85):
1

The skin of the scalp is relatively thin except for where?

Posteriorly

2

Posterior position of the scalp is relatively thick due to a large quantity of what six things?

Posteriorly there is a large quantity of:

1- Sudoriforous glands (sweat glands)

2- Sebacious glands

3- Hair follicles

4- Arterial supply

5- Venous supply

6- Lymphatic supply

3

What is the vascular and neural status of the underlying thick connective tissue of the scalp?

Of the scalp the underlying thick connective tissue is well vascularized with a large quantity of Cutaneous Nerves

4

Deep to the Subcutaneous tissue in the scalp is located what?

Deep to the subcutaneous tissue is the Galea Aponeurotica

5

What does Scalp stand for?

Skin

Connective Tissue (Dense)

Aponeurosis

Loose connective tissue

Pericranium

This is ranked Superior to Deep

6

What are the three layers that make up the cranial Meninges?

From Superficial to Deep:

Dura matter

Arachnoid

Pia Mater

7

What is the Subachnoid space filled with?

CSF

8

What is the Galea Aponeurotica inserted by anteriorly and posteriorly?

Anteriorly: Frontalis muscle

Posteriorly: Occipitalis muscle

9

What does the inserted Galea Aponeurotica by Frontalis muscle and Occipitalis muscle form?

the Occipitofrontalis

10

What is the muscles of the facial expression innervated by?

Facial expression muscles are innervated by branches of the Facial Nerve 

 

CN VII

11

What does the Occipitofrontalis do?

Moves the scalp anteriorly/posteriorly

Elevates the eyebrows

 

12

What is the bony attachment of the Occipitofrontalis?

bony attachment is:

Superior Nuchal line

13

Where does the Frontalis attach to?

attaches to the skin of the Forehead

14

What does the Obicularis Oris do?

Closes the oral orafice

 

15

What are the attachments of the Obicularis Oris?

Attachments are:

Mandible

Maxilla

Lips

16

What does the Obicularis Oculi do?

It closes the eye lids

17

What is the attachment for Obicularis Oculi?

attaches from the Orbit to the skin surrounding the eye

18

What does Platysma do?

-It tenses the skin of the Anterior neck

-Depresses the mandible

19

What are the attachments of Platysma?

Attaches from the Mandible with fibers overlying the tissues inferior to the oral orafice

and

projects inferiorly to blend in with the pectoral fascia

20

What does Mentalis do?

Elevates the lower lip

Protrudes the lower lip

21

What is the attachment of Mentalis?

Attaches from the Mandible 

to 

the skin of the chin

22

What does the Depressor Labii Inferioris do?

Depress the lower lip

23

What is the attachment of Depressor Labii Inferioris

Attaches from the Mandible

to 

the skin of the lower lip

24

What does Depressor Anguli Oris do?

Depresses the lateral aspect of the mouth

25

What is the attachment of Depressor Anguli Oris

Attaches from the Mandible

to

the Angle of the mouth

26

What does Levator Labii Superioris do?

Elevates the upper lip

27

What is the attachment of Levator Labii Superioris?

attaches from the Maxilla

to 

the skin of the upper lip

28

What does Levator Anguli Oris do?

Widens the oral orafice

29

Where is the Levator Anguli Oris located?

Located deep to the Levator Labii superioris

30

Where is the attachment of Levator Anguli Oris?

attaches from the Maxilla 

to 

the Angle of the mouth

31

What does Risorius do?

Depress Lateral Aspect of the mouth

32

What are the attachment of Risorius?

attaches from Parotid fascia

to 

the angle of the mouth

33

What does Zygomaticus Major do?

Elevates the lateral aspect of the mouth

34

What is the attachment of the Zygomaticus Major?

attaches from Zygomatic bone

to 

angle of the mouth

35

What does the Zygomaticus Minor do?

Elevates the upper lip

36

Where is the Zygomaticus Minor located?

Located between Zygomaticus major

and

Levator Labii Superioris

37

What is the attachment Zygomaticus Minor

attaches from Zygomatic bone 

to 

the skin of the upper lip

38

What does Buccinator do?

Tenses the cheeks

39

Where is the Buccinator located?

it runs deep to the Masseter

40

What is the attachment of the Buccinator?

attaching the Mandible and Maxilla

to

the angle of the mouth

41

What does Nasalis/Procerus do?

"Flares" the nostrils

Depresses the Medial Eyebrow

42

What is the attachments of Nasalis/Procerus?

attaches from the Nasal bone and Cartilage

to 

skin of the forehead (specifically in between the orbits)

43

What does Corrugator Supercilii do?

Draws eyebrows Medially 

Draws eyebrows Inferiorly

44

Where is the Corrugator Supercilii located?

located deep to Occipito-Frontalis

45

What is the attachments of Corrugator Supercilii?

Attaches from the Superciliary Arch

to 

the skin along the Medial Orbit

and deep to the superciliary arch

46

What does Levator Palpebrae do?

Elevates eye lid to increase diameter of Ocular Orafice

47

What is the attachment of Levator Palpebrae?

attaches from Lesser wing of Sphenoid

to

skin of upper eye lid

48

What does Auricularis do?

Allows for movement of the ears

49

What is the path of Auricularis?

Projects from Temporal Fascia 

continuous with Galea Aponeurotica

with insertion into the Auricle

50

What are the 3 portions of Auricularis?

Superior

Anterior

Posterior

51

What is located between Buccinator and Masseter in infants to prevent collapse of the cheeks during suckling?

Buccal fat pads

52

What are the 6 branches of the Facial Nerve with the Parotid Gland removed?

1- Posterior Auricular

2- Temporal

3- Zygomatic

4- Buccal

5- Marginal Mandibular

6- Cervical

53

What Trigeminal Ganglion gives rise to how many branches and what do they primary function as?

There is 3 branches and are primarily sensory in function

54

Name the 3 branches of the Trigeminal ganglion.

1- Ophthalmic

2- Maxillary

3- Mandibular

55

What do each Trigeminal Ganglion sense?

Ophthalmic senses the: Orbit, Forehead, and Anterior scalp

Maxillary senses: Maxillary region, surrounding Mucosa, and Lateral Nose

Mandibular senses: Mandibular region and the rare Motor innervation to Primary muscles of Mastication

56

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59

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61

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62

Label these nerves

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63

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65

How would you decribe the texture or characteristics of Galea Aponeurotica which is inserted by the frontalis anteriolry and occipitalis to for occipitofrontalis?

It is tendinous

66

Give the path of Facial Nerve CN VII to Plexus ganglia

CN VII

inner acoustic meatus

innervates the stapezius

leaves the cranium via Stylomastoid foraman

goes through the perotid gland

then shread as plexus ganglia

67

How is the Platysma oriented?

it is very superficial

68

What is the primary and secondary use for Platysma? and why?

primarily is used to fight against gravity

secondarly is used for opening mouth very wide

69

What sort of facial expression is expressed with the depressor anguli oris?

Frown face

70

What sort of facial expression is expressed with mentalis?

sad face

71

What two muscles are involved in smiling?

Levator Labii superioris

Levator anguli oris

72

How is the Buccinator oriented? aka what two structures is it deep to?

located behind  Masseter then deep to that is a buccal fat pad

73

Tell us about the buccal fat pad in infants and in adults

In infats it is much bigger to assist with suckling for milk and it decreases and muscle become bigger in adults

74

What innervates the Levator Palebrae?

occulomotor CN III

75

What muscle is the Auricularis superior to?

it's superior to the temporal muscle

76

From the 6 branches of the Facial nerves (motor for the face) which branch straight from CN VII and which are via the Parotid gland?

Straight: Posterior Auricular 

Via Parotid gland: Tempora, Zygomatic, Buccal, Marginal Mandibular, and Cervical

77

What branch of the Facial nerve innervates the Platysma?

The Cervival branch of CN VII

78

Which CN innervates the sensory information from the face and orbital region?

Trigeminal CN

79

Which facial muscle is most involved in mastication?

Mandibular

80

Greater occipital nerve innervates the posterior portion of the head, what aspect of the C2 is it and what does it go through to get there?

posterior rami of the C2

via semispinalis capitus

81

What is the path of the facial nerve?

Internal acoustic meatus

innervates the stapezius

leaves the craniums via the Stylomastoid foramen

Goes through the Parotid gland

and shreds to plexus ganglions

82

When will the Occipitofrontalis elevate the eye brows? under what condition?

only when the Galea Aponeurotica is already stablized

83

Obicularis Oculi's antagonist is what muscle?

Levator Palpebrae

84

There are 6 branches of the facial nerve. Which innervates the motor to the face directly and which goes through the Parotid gland?

Directly: Posterior 

via Parotid gland: Temporal, Zygomatic, Buccal, Marginal Mandibular, and Cervical 

85

which Cranial nerve serves as sensory nerve to the face?

Trigeminal