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DPT 500-Anatomy and Histology > Neck and Facial Muscles > Flashcards

Neck and Facial Muscles Flashcards

1
Q

orbicularis oculi - palpebral part

A

origin: medial palpebral ligament

insertion: lateral palpebral raphe

innervation: facial nerve [VII]

function: closes the eyelids gently

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2
Q

orbicularis oculi - orbital part

A

origin: medial palpebral ligament

insertion: ellipse around orbit

innervation: facial nerve [VII]

function: closes the eyelids forcefully

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3
Q

curugator supercilii

A

origin: medial end of the superciliary arch

insertion: skin of the medial half of eyebrow

innervation: facial nerve [VII]

function: draws the eyebrows medially; produces vertical wrinkles of glabella

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4
Q

nasalis - transverse part

A

origin: maxilla just lateral to nose

insertion: aponeurosis across dorsum of nose with muscle fibers from the other side

innervation: facial nerve [VII]

function: compresses nasal aperture

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5
Q

nasalis - alar part

A

origin: maxilla over lateral incisor

insertion: alar cartilage of nose

innervation: facial nerve [VII]

function: opens nostril

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6
Q

procerus

A

origin: nasal bone and lateral nasal cartilage

insertion: skin of glabella

innervation: facial nerve [VII]

function:Draws down medial angle of eyebrows, producing transverse wrinkles over bridge of nose

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7
Q

depressor septic nasi

A

origin: maxilla above medial incisor

insertion: nasal septum

innervation: facial nerve [VII]

function: pulls nose inferiorly

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8
Q

depressor anguli oris

A

origin: mandible

insertion: modiolus - skin at the corner of mouth

innervation: facial nerve [VII]

function: draws corner of mouth downward and laterally

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9
Q

depressor labii inferioris

A

origin: mandibular

insertion: lower lip at midline

innervation: facial nerve [VII]

function: draws lower lip downward and laterally

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10
Q

mentalis

A

origin: mandible inferior to incisor teeth

insertion: skin of chin

innervation: facial nerve [VII]

function: protrudes lower lip as it wrinkles skin on chin

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11
Q

risorius

A

origin: fascia over masseter muscle

insertion: modiolus - skin at the corner of the mouth

innervation: facial nerve [VII]

function: retracts corner of mouth

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12
Q

zygomaticus major

A

origin: posterior part of zygomatic bone

insertion: modiolus - skin at the corner of the mouth

innervation: facial nerve [VII]

function: draws the corner of the mouth upward and laterally

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13
Q

zygomaticus minor

A

origin: anterior part of zygomatic bone

insertion: upper lip just medial to corner of mouth

innervation: facial nerve [VII]

function: draws the upper lip upward

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14
Q

levator labii superioris

A

origin: infra-orbital margin of maxilla

insertion: skin of upper lateral half of upper lip

innervation: skin of upper lateral half of upper lip

function: raises upper lip; helps form nasolabial furrow

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15
Q

levator labii superioris alaeque nasi

A

origin: frontal process of maxilla

insertion: alar cartilage of nose and upper lip

innervation: facial nerve [VII]

function: raises upper lip and opens nostril

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16
Q

levator anguli oris

A

origin: maxilla below infra-orbital foramen

insertion: modiolus - skin at the corner of the mouth

innervation: facial nerve [VII]

function: raises corner of mouth; helps form nasolabial furrow

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16
Q

orbicularis oris

A

origin: from muscles in area; maxilla and mandible in midline

insertion: forms ellipse around mouth

innervation: facial nerve [VII]

function: closes lips; protrudes lips

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17
Q

buccinator

A

origin: posterior parts of maxilla and mandible; pterygomandibular raphe

insertion: blends with orbicularis oris and into lips

innervation: facial nerve [VII]

function: presses the cheek against teeth; compresses distended cheeks

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18
Q

platysma

A

origin: fascia of clavicular region

insertion: lower border of mandible, skin of buccal/cheek region, lower lip, modiolus

innervation: facial nerve [VII]

function: depresses mandible and angle of mouth, tenses skin of lower face and anterior neck

19
Q

anterior auricular

A

origin: temporal fascia

insertion: anterior part of auricle

innervation: facial nerve [VII]

function: draws ear upward and forward

20
Q

superior auricular

A

origin: epicranial aponeurosis on side of head

insertion:upper part of auricle

innervation: facial nerve [VII]

function: elevates ear

21
Q

posterior auricular

A

origin: mastoid process of temporal bone

insertion: posterior part of auricle

innervation: facial nerve [VII]

function: draws ear upward and backward

22
Q

occipitofrontalis - frontal belly

A

origin: skin of eyebrows

insertion: galea aponeurotica

innervation: facial nerve [VII]

function: wrinkles forehead; raises eyebrows

23
Q

occipitofrontalis - occipital belly

A

origin: lateral part of superior nuchal line of occipital bone and mastoid process of temporal bone

insertion: galea aponeurotica

innervation: facial nerve [VII]

function: draws scalp backward

24
Q

masseter

A

origin: zygomatic arch and maxillary process of the zygomatic bone

insertion: lateral surface of ramus of mandible

innervation: mandibular nerve (V3)

function: elevation of mandible (superficial part); retraction of mandible (deep part)

25
Q

temporalis

A

origin: temporal fossa and temporal fascia

insertion: coronoid process of mandible and anterior margin of ramus of mandible

innervation: mandibular nerve (V3)

function: elevation and retraction of mandible

26
Q

medial pterygoid

A

origin: deep head—lateral plate of pterygoid; superficial head—maxilla

insertion: medial surface angle

innervation: mandibular nerve (V3)

function: elevation and side-to-side movements of the mandible

27
Q

lateral pterygoid

A

origin: upper head—roof of infratemporal fossa; lower head—lateral plate of the pterygoid process

insertion: capsule of temporomandibular joint

innervation: mandibular nerve (V3) or from buccal branch

function: protrusion and side-to-side movements of the mandible

28
Q

stylohyoid

A

origin: base of styloid process

insertion: body of hyoid bone

innervation: facial nerve [VII]

function: elevates hyoid

29
Q

digastric - anterior belly

A

origin: digastric fossa on lower inside of mandible

insertion: body of hyoid bone

innervation: mandibular nerve (V3)

function: opens mouth by lowering mandible; raises hyoid bone

30
Q

diagastric - posterior belly

A

origin: mastoid process of temporal bone

insertion: body of hyoid bone

innervation: facial nerve [VII]

function: pulls hyoid bone upward and back

31
Q

mylohyoid

A

origin: mylohyoid line on mandible

insertion: body of hyoid bone and fibers from muscle on opposite side

innervation: mandibular nerve (V3)

function: supports floor of mouth; elevation of hyoid

32
Q

geniohyoid

A

origin: inner surface of mandible

insertion: anterior surface of body of hyoid bone

innervation: branch from anterior ramus of C1 (carried along the hypoglossal nerve [XII])

function: elevates hyoid bone

33
Q

sternohyoid

A

origin: sternoclavicular joint and manubrium

insertion: body of hyoid bone

innervation: ansa cervicalis (C1-3)

function: depresses hyoid bone after swallowing

34
Q

omohyoid

A

origin: superior border of scapula medial to suprascapular notch

insertion: lower border of body of hyoid bone

innervation: ansa cervicalis (C1-C3)

function: depresses and fixes hyoid bone

35
Q

thryrohyoid

A

origin: thyroid cartilage

insertion: hyoid bone

innervation: hypoglossal nerve [XII] (C1)

function: depresses hyoid bone

36
Q

sternothyroid

A

origin: posterior surface of manubrium of sternum

insertion: thyroid cartilage

innervation: ansa cervicalis (C1-C3)

function: draws larynx (thyroid cartilage) downward

37
Q

posterior scalene

A

origin: transverse processes of vertebrae CIV to CVI

insertion:Upper surface of rib 2

innervation: anterior rami of C5 to C7

function: elevation of rib 2

38
Q

middle scalene

A

origin: transverse processes of vertebrae C2 to C7

insertion:Upper surface of rib 1

innervation: anterior rami of C3 to C7

function: elevation of rib 1

39
Q

anterior scalene

A

origin: transverse processes of vertebrae C3 to C6

insertion: upper surface of rib 1

innervation: anterior rami of C4 to C7

function: elevation of rib 1

40
Q

rectus capitus anterior

A

origin: transverse process of atlas

insertion: occipital bone

innervation: anterior rami of C1, C2

function: flexes head

41
Q

rectus capitus lateralis

A

origin: transverse process of atlas

insertion: occipital bone

innervation: anterior rami of C1, C2

function: flexes head laterally to same side

42
Q

longus colli

A

origin: body and transverse processes of cervical vertebrae

insertion: body and transverse processes of cervical vertebrae

innervation: anterior rami of C2 to C6

function: flexes neck and slight rotation to opposite side

43
Q

longus capitis

A

origin: transverse processes of vertebrae C3 to C6

insertion: occipital bone

innervation:anterior rami of C1 to C3

function: flexes the head

44
Q
A

DPT 500-Anatomy and Histology (12 decks)

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