Face, Temporal, and Infratemporal Regions

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21 Terms

1
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Orbicularis Oculi

Peripheral Innervation

Facial nerve

Segmental Innervation

Facial nerve

Action

Forcefully close eyes, encourages flow of tears, squint

<p><strong>Peripheral Innervation</strong></p><p>Facial nerve </p><p><strong>Segmental Innervation</strong></p><p>Facial nerve </p><p><strong>Action</strong></p><p><span>Forcefully close eyes, encourages flow of tears, squint</span></p>
2
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Frontalis

Peripheral Innervation

Facial nerve

Segmental Innervation

Facial nerve

Action

Elevates eyebrows, wrinkle forehead

<p><strong>Peripheral Innervation</strong></p><p>Facial nerve</p><p><strong>Segmental Innervation</strong></p><p>Facial nerve</p><p><strong>Action</strong></p><p><span>Elevates eyebrows, wrinkle forehead</span></p>
3
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Corrugator

Peripheral Innervation

Facial nerve

Segmental Innervation

Facial nerve

Action

Knits eyebrows together

<p><strong>Peripheral Innervation</strong></p><p>Facial nerve</p><p><strong>Segmental Innervation</strong></p><p>Facial nerve</p><p><strong>Action</strong></p><p><span>Knits eyebrows together</span></p>
4
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Levator Palpebrae Superioris

Peripheral Innervation

Oculomotor nerve

Segmental Innervation

Oculomotor nerve

Action

Elevates upper eyelid, continuously active (agonist of orbicularis oculi)

<p><strong>Peripheral Innervation</strong></p><p>Oculomotor nerve </p><p><strong>Segmental Innervation</strong></p><p>Oculomotor nerve </p><p><strong>Action</strong></p><p><span>Elevates upper eyelid, continuously active (agonist of orbicularis oculi)</span></p>
5
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Nasalis

Peripheral Innervation

Facial nerve

Segmental Innervation

Facial nerve

Action

Compresses and flares nostril, draws nostril down

<p><strong>Peripheral Innervation</strong></p><p>Facial nerve </p><p><strong>Segmental Innervation</strong></p><p>Facial nerve</p><p><strong>Action</strong></p><p><span>Compresses and flares nostril, draws nostril down</span></p>
6
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Procerus

Peripheral Innervation

Facial nerve

Segmental Innervation

Facial nerve

Action

Draws medial part of eyebrow inferiorly

<p><strong>Peripheral Innervation</strong></p><p>Facial nerve</p><p><strong>Segmental Innervation</strong></p><p>Facial nerve</p><p><strong>Action</strong></p><p><span>Draws medial part of eyebrow inferiorly</span></p>
7
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Orbicularis Oris

Peripheral Innervation

Facial nerve

Segmental Innervation

Facial nerve

Action

Oral sphincter, lip protrusion, compression, mastication, and pucker

<p><strong>Peripheral Innervation</strong></p><p>Facial nerve</p><p><strong>Segmental Innervation</strong></p><p>Facial nerve</p><p><strong>Action</strong></p><p><span>Oral sphincter, lip protrusion, compression, mastication, and pucker</span></p>
8
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Levator Labii Superioris

Peripheral Innervation

Facial nerve

Segmental Innervation

Facial nerve

Action

Raises and everts upper lip

<p><strong>Peripheral Innervation</strong></p><p>Facial nerve</p><p><strong>Segmental Innervation</strong></p><p>Facial nerve</p><p><strong>Action</strong></p><p><span>Raises and everts upper lip</span></p>
9
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Levator Labii Superioris Alaque Nasi

Peripheral Innervation

Facial nerve

Segmental Innervation

Facial nerve

Action

Elevates alar cartilage of nose and upper lip

<p><strong>Peripheral Innervation</strong></p><p>Facial nerve</p><p><strong>Segmental Innervation</strong></p><p>Facial nerve</p><p><strong>Action</strong></p><p><span>Elevates alar cartilage of nose and upper lip</span></p>
10
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Levator Anguli Oris

Peripheral Innervation

Facial nerve

Segmental Innervation

Facial nerve

Action

Elevates corner of mouth

<p><strong>Peripheral Innervation</strong></p><p>Facial nerve</p><p><strong>Segmental Innervation</strong></p><p>Facial nerve</p><p><strong>Action</strong></p><p><span>Elevates corner of mouth</span></p>
11
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Zygomaticus Major & Minor

Peripheral Innervation

Facial nerve

Segmental Innervation

Facial nerve

Action

Pulls mouth corners upward and outward, smile

<p><strong>Peripheral Innervation</strong></p><p>Facial nerve</p><p><strong>Segmental Innervation</strong></p><p>Facial nerve</p><p><strong>Action</strong></p><p><span>Pulls mouth corners upward and outward, smile</span></p>
12
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Risorius

Peripheral Innervation

Facial nerve

Segmental Innervation

Facial nerve

Action

Pulls mouth corners upward and outward (backward), smile

<p><strong>Peripheral Innervation</strong></p><p>Facial nerve</p><p><strong>Segmental Innervation</strong></p><p>Facial nerve</p><p><strong>Action</strong></p><p><span>Pulls mouth corners upward and outward (backward), smile</span></p>
13
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Depressor Anguli Oris

Peripheral Innervation

Facial nerve

Segmental Innervation

Facial nerve

Action

Depresses corner of mouth

<p><strong>Peripheral Innervation</strong></p><p>Facial nerve</p><p><strong>Segmental Innervation</strong></p><p>Facial nerve</p><p><strong>Action</strong></p><p><span>Depresses corner of mouth</span></p>
14
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Depressor Labii Inferioris

Peripheral Innervation

Facial nerve

Segmental Innervation

Facial nerve

Action

Draws lips inferiorly and laterally

<p><strong>Peripheral Innervation</strong></p><p>Facial nerve</p><p><strong>Segmental Innervation</strong></p><p>Facial nerve</p><p><strong>Action</strong></p><p><span>Draws lips inferiorly and laterally</span></p>
15
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Mentalis

Peripheral Innervation

Facial nerve

Segmental Innervation

Facial nerve

Action

Raise and protrude lower lip; pout

<p><strong>Peripheral Innervation</strong></p><p>Facial nerve</p><p><strong>Segmental Innervation</strong></p><p>Facial nerve</p><p><strong>Action</strong></p><p><span>Raise and protrude lower lip; pout</span></p>
16
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Platysma

Peripheral Innervation

Facial nerve

Segmental Innervation

Facial nerve

Action

Tenses skin of neck, draws corners of mouth inferiorly, assist in depressing mandible

<p><strong>Peripheral Innervation</strong></p><p>Facial nerve</p><p><strong>Segmental Innervation</strong></p><p>Facial nerve</p><p><strong>Action</strong></p><p><span>Tenses skin of neck, draws corners of mouth inferiorly, assist in depressing mandible</span></p>
17
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Buccinator

Peripheral Innervation

Facial nerve

Segmental Innervation

Facial nerve

Action

Aids in mastication and swallowing, press cheeks against molar teeth during chewing, whistling/sucking

<p><strong>Peripheral Innervation</strong></p><p>Facial nerve</p><p><strong>Segmental Innervation</strong></p><p>Facial nerve</p><p><strong>Action</strong></p><p><span>Aids in mastication and swallowing, press cheeks against molar teeth during chewing, whistling/sucking</span></p>
18
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Masseter

Origin

Inferior border & medial surface of zygomatic arch

Insertion

Lateral surface of ramus of mandible & coronoid process

Peripheral Innervation

Mandibular Division of Trigeminal Nerve (CN V3)

Segmental Innervation

Mandibular Division of Trigeminal Nerve (CN V3)

Action

Elevates & protrudes mandible; deep fibers retrude

<p><strong>Origin</strong></p><p><span>Inferior border &amp; medial surface of zygomatic arch</span></p><p><strong>Insertion</strong></p><p><span>Lateral surface of ramus of mandible &amp; coronoid process</span></p><p><strong>Peripheral Innervation</strong></p><p>Mandibular Division of Trigeminal Nerve (CN V3) </p><p><strong>Segmental Innervation</strong></p><p>Mandibular Division of Trigeminal Nerve (CN V3) </p><p><strong>Action</strong></p><p>Elevates &amp; protrudes mandible; deep fibers retrude</p>
19
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Temporalis

Origin

Temporal fossa & deep surface of temporal fascia

Insertion

Tip & medial surface of coronoid process & ramus of mandible

Peripheral Innervation

Mandibular Division of Trigeminal Nerve (CN V3)

Segmental Innervation

Mandibular Division of Trigeminal Nerve (CN V3)

Action

Elevates mandible; posterior fibers retrude mandible after protrusion

<p><strong>Origin</strong></p><p><span>Temporal fossa &amp; deep surface of temporal fascia</span></p><p><strong>Insertion</strong></p><p><span>Tip &amp; medial surface of coronoid process &amp; ramus of mandible</span></p><p><strong>Peripheral Innervation</strong></p><p>Mandibular Division of Trigeminal Nerve (CN V3)</p><p><strong>Segmental Innervation</strong></p><p>Mandibular Division of Trigeminal Nerve (CN V3)</p><p><strong>Action</strong></p><p>Elevates mandible; posterior fibers retrude mandible after protrusion</p>
20
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Lateral Pterygoid

Origin

Superior head: infratemporal surface & crest of greater wing of sphenoid bone
Inferior head: lateral surface of lateral pterygoid plate

Insertion

Both heads insert at neck of mandible;
superior head also inserts to anterior part of articular disc & capsule of TMJ

Peripheral Innervation

Mandibular Division of Trigeminal Nerve (CN V3)

Segmental Innervation

Mandibular Division of Trigeminal Nerve (CN V3)

Action

Acting bilaterally, protrude mandible
Acting alone & alternately, produce side to side movements of mandible; superior head works eccentrically to control posterior movement of disc during closing

<p><strong>Origin</strong></p><p><span><strong>Superior head:</strong> infratemporal surface &amp; crest of greater wing of sphenoid bone<br><strong>Inferior head: </strong>lateral surface of lateral pterygoid plate</span></p><p><strong>Insertion</strong></p><p><span>Both heads insert at neck of mandible;<br>superior head also inserts to anterior part of articular disc &amp; capsule of TMJ</span></p><p><strong>Peripheral Innervation</strong></p><p>Mandibular Division of Trigeminal Nerve (CN V3)</p><p><strong>Segmental Innervation</strong></p><p>Mandibular Division of Trigeminal Nerve (CN V3)</p><p><strong>Action</strong></p><p>Acting bilaterally, protrude mandible<br>Acting alone &amp; alternately, produce side to side movements of mandible; superior head works eccentrically to control posterior movement of disc during closing</p>
21
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Medial Pterygoid

Origin

Deep head: medial surface of lateral pterygoid plate
Superficial head: tuberosity of maxilla

Insertion

Medial surface of ramus of mandible

Peripheral Innervation

Mandibular Division of Trigeminal Nerve (CN V3)

Segmental Innervation

Mandibular Division of Trigeminal Nerve (CN V3)

Action

Acting bilaterally, elevate mandible & help to protrude mandible
Acting alternately, produce grinding motion

<p><strong>Origin</strong></p><p><span><strong>Deep head</strong>: medial surface of lateral pterygoid plate<br><strong>Superficial head</strong>: tuberosity of maxilla</span></p><p><strong>Insertion</strong></p><p><span>Medial surface of ramus of mandible</span></p><p><strong>Peripheral Innervation</strong></p><p>Mandibular Division of Trigeminal Nerve (CN V3)</p><p><strong>Segmental Innervation</strong></p><p>Mandibular Division of Trigeminal Nerve (CN V3)</p><p><strong>Action</strong></p><p>Acting bilaterally, elevate mandible &amp; help to protrude mandible<br>Acting alternately, produce grinding motion</p>

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