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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
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
57
58
59
60
61
62
Label these nerves
63
64
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

Anatomy 1 (9 decks)

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