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Human Gross Anatomy > Head and neck muscle functions > Flashcards

Head and neck muscle functions Flashcards

1
Q

Buccinator muscle

A

Compresses cheeks

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2
Q

Depressor lablill infeirioris

A

Depresses lower lip

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3
Q

Levator labill superiloris

A

Elevates upper lip

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4
Q

Mentalis

A

Elevates and protrudes lower lip

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5
Q

Orbicularis Oris

A

Compresses, purse lips

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6
Q

Risorius

A

Draws corner of mouth to the side

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7
Q

Depressor anguli oris

A

Depress corner of mouth

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8
Q

Zygomaticus major

A

Retracts and elevates corner of mouth

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9
Q

Zygomaticus Minor

A

Retracts and elevates upper lip

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10
Q

Corrugator supercilli

A

Pulls skin inferiorly and anteriorly, wrinkle brow

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11
Q

Levator papebrae superloris

A

Elevate upper eyelid

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12
Q

Orbicularis oculi

A

Close eye.

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13
Q

Occipitofrontalis

A

Frontal belly: Raise eyebrows
Occipital belly: Tenses and retracts scalp

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14
Q

Platysma

A

Tense skin of neck, depresses mandible

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15
Q

Masseter

A

Elevates mandible and closes the jaw

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16
Q

Temporalis

A

Elevates mandible

17
Q

Pterygoids

A

Medial: Elevates the mandible and closes the jaws, or performs lateral excursion.
Lateral: Opens jaws, protrudes mandible or performs lateral excursion.

18
Q

Cricothyroid

A

Lengthen and increase tension on vocal cords

19
Q

Sternocleidomastoid

A

Together: Flex head and neck
Individually: Laterally flex and rotate head

20
Q

Scalenes

A

Both: Stabilize neck and elevate ribs in respiration
Individually: Lateral flexion of neck

21
Q

Sternohyoid

A

Depress hyoid

22
Q

Omohyoid

A

Depress and retract hyoid

23
Q

Sternothyroid

A

Depress thyroid cartilage

24
Q

Thyrohyoid

A

Depress hyoid bone or elevate thyroid cartilage

25
Q

Stylohyoid

A

Raise and retract hyoid

26
Q

Digastricus

A

Anterior - open mouth
Posterior - elevate hyoid

27
Q

Mylohyoid

A

Elevate floor of mouth and tongue

28
Q

Geniohyoid

A

Elevate hyoid and base of tongue

29
Q

Arytenoids (transverse and oblique)

A

Adduct vocal cords, closing glottis

30
Q

Lateral cricoarytenoids

A

Adduct vocal cords closing glottis

31
Q

Posterior cricoarytenoids

A

Abduct vocal cords opening glottis

32
Q

Thyroarytenoids

A

Shorten or relax vocal cords

33
Q

Vocalis

A

Shorten or relax vocal cords.

Human Gross Anatomy (17 decks)

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