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Anatomy 1 > 7- Muscles of Facial Expression > Flashcards

7- Muscles of Facial Expression Flashcards

1
Q

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

A

Posteriorly

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2
Q

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

A

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

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3
Q

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

A

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

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4
Q

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

A

Deep to the subcutaneous tissue is the Galea Aponeurotica

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5
Q

What does Scalp stand for?

A

Skin

Connective Tissue (Dense)

Aponeurosis

Loose connective tissue

Pericranium

This is ranked Superior to Deep

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6
Q

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

A

From Superficial to Deep:

Dura matter

Arachnoid

Pia Mater

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7
Q

What is the Subachnoid space filled with?

A

CSF

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8
Q

What is the Galea Aponeurotica inserted by anteriorly and posteriorly?

A

Anteriorly: Frontalis muscle

Posteriorly: Occipitalis muscle

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9
Q

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

A

the Occipitofrontalis

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10
Q

What is the muscles of the facial expression innervated by?

A

Facial expression muscles are innervated by branches of the Facial Nerve

CN VII

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11
Q

What does the Occipitofrontalis do?

A

Moves the scalp anteriorly/posteriorly

Elevates the eyebrows

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12
Q

What is the bony attachment of the Occipitofrontalis?

A

bony attachment is:

Superior Nuchal line

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13
Q

Where does the Frontalis attach to?

A

attaches to the skin of the Forehead

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14
Q

What does the Obicularis Oris do?

A

Closes the oral orafice

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15
Q

What are the attachments of the Obicularis Oris?

A

Attachments are:

Mandible

Maxilla

Lips

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16
Q

What does the Obicularis Oculi do?

A

It closes the eye lids

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17
Q

What is the attachment for Obicularis Oculi?

A

attaches from the Orbit to the skin surrounding the eye

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18
Q

What does Platysma do?

A
  • It tenses the skin of the Anterior neck
  • Depresses the mandible
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19
Q

What are the attachments of Platysma?

A

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

and

projects inferiorly to blend in with the pectoral fascia

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20
Q

What does Mentalis do?

A

Elevates the lower lip

Protrudes the lower lip

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21
Q

What is the attachment of Mentalis?

A

Attaches from the Mandible

to

the skin of the chin

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22
Q

What does the Depressor Labii Inferioris do?

A

Depress the lower lip

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23
Q

What is the attachment of Depressor Labii Inferioris

A

Attaches from the Mandible

to

the skin of the lower lip

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24
Q

What does Depressor Anguli Oris do?

A

Depresses the lateral aspect of the mouth

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25
Q

What is the attachment of Depressor Anguli Oris

A

Attaches from the Mandible

to

the Angle of the mouth

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26
Q

What does Levator Labii Superioris do?

A

Elevates the upper lip

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27
Q

What is the attachment of Levator Labii Superioris?

A

attaches from the Maxilla

to

the skin of the upper lip

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28
Q

What does Levator Anguli Oris do?

A

Widens the oral orafice

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29
Q

Where is the Levator Anguli Oris located?

A

Located deep to the Levator Labii superioris

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30
Q

Where is the attachment of Levator Anguli Oris?

A

attaches from the Maxilla

to

the Angle of the mouth

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31
Q

What does Risorius do?

A

Depress Lateral Aspect of the mouth

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32
Q

What are the attachment of Risorius?

A

attaches from Parotid fascia

to

the angle of the mouth

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33
Q

What does Zygomaticus Major do?

A

Elevates the lateral aspect of the mouth

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34
Q

What is the attachment of the Zygomaticus Major?

A

attaches from Zygomatic bone

to

angle of the mouth

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35
Q

What does the Zygomaticus Minor do?

A

Elevates the upper lip

36
Q

Where is the Zygomaticus Minor located?

A

Located between Zygomaticus major

and

Levator Labii Superioris

37
Q

What is the attachment Zygomaticus Minor

A

attaches from Zygomatic bone

to

the skin of the upper lip

38
Q

What does Buccinator do?

A

Tenses the cheeks

39
Q

Where is the Buccinator located?

A

it runs deep to the Masseter

40
Q

What is the attachment of the Buccinator?

A

attaching the Mandible and Maxilla

to

the angle of the mouth

41
Q

What does Nasalis/Procerus do?

A

“Flares” the nostrils

Depresses the Medial Eyebrow

42
Q

What is the attachments of Nasalis/Procerus?

A

attaches from the Nasal bone and Cartilage

to

skin of the forehead (specifically in between the orbits)

43
Q

What does Corrugator Supercilii do?

A

Draws eyebrows Medially

Draws eyebrows Inferiorly

44
Q

Where is the Corrugator Supercilii located?

A

located deep to Occipito-Frontalis

45
Q

What is the attachments of Corrugator Supercilii?

A

Attaches from the Superciliary Arch

to

the skin along the Medial Orbit

and deep to the superciliary arch

46
Q

What does Levator Palpebrae do?

A

Elevates eye lid to increase diameter of Ocular Orafice

47
Q

What is the attachment of Levator Palpebrae?

A

attaches from Lesser wing of Sphenoid

to

skin of upper eye lid

48
Q

What does Auricularis do?

A

Allows for movement of the ears

49
Q

What is the path of Auricularis?

A

Projects from Temporal Fascia

continuous with Galea Aponeurotica

with insertion into the Auricle

50
Q

What are the 3 portions of Auricularis?

A

Superior

Anterior

Posterior

51
Q

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

A

Buccal fat pads

52
Q

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

A

1- Posterior Auricular

2- Temporal

3- Zygomatic

4- Buccal

5- Marginal Mandibular

6- Cervical

53
Q

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

A

There is 3 branches and are primarily sensory in function

54
Q

Name the 3 branches of the Trigeminal ganglion.

A

1- Ophthalmic

2- Maxillary

3- Mandibular

55
Q

What do each Trigeminal Ganglion sense?

A

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
Q
A
57
Q
A
58
Q
A
59
Q
A
60
Q
A
61
Q
A
62
Q

Label these nerves

A
63
Q
A
64
Q
A
65
Q

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

A

It is tendinous

66
Q

Give the path of Facial Nerve CN VII to Plexus ganglia

A

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
Q

How is the Platysma oriented?

A

it is very superficial

68
Q

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

A

primarily is used to fight against gravity

secondarly is used for opening mouth very wide

69
Q

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

A

Frown face

70
Q

What sort of facial expression is expressed with mentalis?

A

sad face

71
Q

What two muscles are involved in smiling?

A

Levator Labii superioris

Levator anguli oris

72
Q

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

A

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

73
Q

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

A

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

74
Q

What innervates the Levator Palebrae?

A

occulomotor CN III

75
Q

What muscle is the Auricularis superior to?

A

it’s superior to the temporal muscle

76
Q

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?

A

Straight: Posterior Auricular

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

77
Q

What branch of the Facial nerve innervates the Platysma?

A

The Cervival branch of CN VII

78
Q

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

A

Trigeminal CN

79
Q

Which facial muscle is most involved in mastication?

A

Mandibular

80
Q

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?

A

posterior rami of the C2

via semispinalis capitus

81
Q

What is the path of the facial nerve?

A

Internal acoustic meatus

innervates the stapezius

leaves the craniums via the Stylomastoid foramen

Goes through the Parotid gland

and shreds to plexus ganglions

82
Q

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

A

only when the Galea Aponeurotica is already stablized

83
Q

Obicularis Oculi’s antagonist is what muscle?

A

Levator Palpebrae

84
Q

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

A

Directly: Posterior

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

85
Q

which Cranial nerve serves as sensory nerve to the face?

A

Trigeminal

Anatomy 1 (9 decks)

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