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Origin, Insertion, and Function of Human Head Muscles Flashcards

(17 cards)

1
Q

Epicranius—

frontal belly / frontalis

A

Origin: galea aponeurotica

Insertion: skin of eyebrows

Function: raises eyebrows

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2
Q

Origin: galea aponeurotica

Insertion: skin of eyebrows

Function: raises eyebrows

A

Epicranius—

frontal belly / frontalis

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3
Q

Epicranius—

occipital belly / occipitalis

A

Origin: occipital bone and temporal bone

Insertion: galea aponeurotica

Function: pulls scalp posteriorly

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4
Q

Origin: occipital bone and temporal bone

Insertion: galea aponeurotica

Function: pulls scalp posteriorly

A

Epicranius—

occipital belly / occipitalis

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5
Q

Orbicularis oculi

A

Origin: frontal bone

Insertion: tissue of eyelid

Function: closes eyes

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6
Q

Corrugator

supercilii

A

Origin: Arch of frontal bone
above nasal bone

Insertion: Skin of eyebrow

Function: Draws eyebrows medially and inferiorly

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7
Q

Levator labii

superioris

A

Origin: Zygomatic bone

Insertion: skin of upper
lip

Function: opens lips

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8
Q

Zygomaticus—

major and minor

A

Origin: Zygomatic bone

Insertion: skin at corner of mouth

Function: Raises lateral corners of mouth
upward (smiling muscle)

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9
Q

Risorius

A

Origin: Fascia of masseter muscle

Insertion: Skin at angle of mouth

Function: Draws corner of lip laterally

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10
Q

Depressor labii

inferioris

A

Origin: Body of mandible lateral to its midline

Insertion: Skin of lower lip

Function: Draws lower lip inferiorly

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11
Q

Depressor anguli

oris

A

Origin: Body of mandible
below incisors

Insertion: Skin at angle
of mouth below insertion
of zygomaticus

Function: draws corners of mouth downward

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12
Q

Orbicularis oris

A

Origin: Arises indirectly from
mandible; other muscles associated with lips

Insertion: Skin at angle of mouth

Function: closes lips

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13
Q

Mentalis

A

Origin: Mandible below incisors

Insertion: Skin of chin

Function: wrinkles chin

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14
Q

Buccinator

A

Origin: Molar region of maxilla and mandible

Insertion: Orbicularis oris

Function: closes jaw

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15
Q

Masseter

A

Origin: Zygomatic arch

Insertion: Angle and ramus of mandible

Function: Draws corner of mouth laterally; compresses cheek

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16
Q

Temporalis

A

Origin: Temporal fossa

Insertion: Coronoid process of mandible

Function: Closes jaw

17
Q

Levator anguli oris

A

Origin: Zygomatic bone

Insertion: skin of mouth