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Biomedical Human Anatomy > Muscle Actions > Flashcards

Muscle Actions Flashcards

1
Q

Frontalis muscle

A

elevates eyebrows, wrinkles forehead

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2
Q

Occipitalis muscle

A

retract scalp

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3
Q

Corrugator supercilii muscle

A

draw eyebrow medial and inferiorly

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4
Q

Orbicularis oculi muscle

A

close eyelids

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5
Q

Palpebral part of eye

A

Gently close eyelids

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6
Q

Orbital part of eye

A

Tightly close eyelids

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7
Q

Procerus muscle

A

depress medial eyebrow

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8
Q

Nasalis muscle

A

flare nostrils

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9
Q

Zygomaticus major muscle

A

Elevates angles of mouth (smile)

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10
Q

Zygomaticus minor muscle

A

Elevate and evert upper lip

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11
Q

Levator labii superioris muscle

A

elevate upper lip

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12
Q

Risorius muscle

A

Widen oral opening; fake smile

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13
Q

Depressor anguli oris muscle

A

Depress labial commissure (frown)

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14
Q

Depressor labii inferioris muscle

A

Depress/evert lower lip (pout)

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15
Q

Mentalis muscle

A

elevate and protrude lower lip/chin skin

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16
Q

Buccinator muscle

A

compress cheek- keep food between teeth

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17
Q

Orbicularis oris muscle

A

close lips (kiss)

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18
Q

Temporalis muscle

A

close jaw

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19
Q

Masseter muscle

A

close haw

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20
Q

Digastric (anterior and posterior belly) muscle

A

depress jaw

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21
Q

Stylohyoid muscle

A

elevate and retract hyoid bone

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22
Q

Mylohyoid muscle

A

elevate hyoid/floor of mouth/tongue during swallowing and speaking

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23
Q

Sternothyroid muscle

A

fix/depress hyoid and depress larynx

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24
Q

Sternohyoid muscle

A

fix/depress hyoid

25
Q

Omohyoid muscle

A

depress/retract/steady hyoid

26
Q

Sternocleidomastoid muscle

A

lateral neck flexion; neck rotation, neck flexion/extension

27
Q

Anterior scalene muscle

A

flex head

28
Q

Middle scalene muscle

A

flex neck laterally, elevate rib 1 in forced inspiration

29
Q

Posterior scalene muscle

A

flex neck laterally, elevate rub 2 in forced inspiration

30
Q

Pectoralis major muscle

A

adduct, medially rotate humerus

31
Q

Pectoralis minor muscle

A

stabilize scapula

32
Q

Serratus anterior muscle

A

protract and rotate scapula

33
Q

Levator scapulae muscle

A

elevates and laterally rotates scapula

34
Q

Rhomboid major muscle

A

retract and rotate scapula/fix scapula to thorax

35
Q

Rhomboid minor muscle

A

retract and rotate scapula/fix scapula to thorax

36
Q

Superior trapezius

A

elevates scapula

37
Q

Middle trapezius

A

retracts scapula

38
Q

Inferior trapezius

A

Depresses scapula

39
Q

Latissimus dorsi muscle

A

extends, adducts, medially rotates humerus

40
Q

Erector spinae muscle

A

extend spinal column and head/lateral flexion of vertebral column

41
Q

External oblique muscle

A

compress abdomen; flex and rotate abdomen

42
Q

Internal oblique muscle

A

compress abdomen; flex and rotate abdomen

43
Q

Tranversus abdominis muscle

A

compress abdomen

44
Q

Rectus abdominis muscle

A

flex trunk

45
Q

External intercostal muscle

A

elevate rib in forced inspiration

46
Q

Internal intercostal muscle

A

between ribs= depress ribs

between cartilage= elevate ribs

47
Q

Innermost intercostal muscle

A

between ribs= depress ribs

between cartilage= elevate ribs

48
Q

Transversus thoracis muscle

A

depress ribs (maybe proprioception)

49
Q

Levator ani muscle

A

form pelvic diaphagm

50
Q

Coccygeus muscle

A

flex coccyx

51
Q

Platysma muscle

A

depress mandible/tense neck skin

52
Q

Cricothyroid muscle

A

stretch and tense vocal ligament

53
Q

Thyrohyoid muscle

A

depress hyoid and elevate larynx

54
Q

Spinalis muscle

A

extend spinal column and head

lateral flexion of vertebral column

55
Q

Longissimus muscle

A

extend spinal column and head

lateral flexion of vertebral column

56
Q

Iliocostalis muscle

A

extend spinal column and head

lateral flexion of vertebral column

57
Q

Multifidus muscle

A

stabilize vertebrae

58
Q

Rotatores muscle

A

stabilize vertebrae, assist in extension of vertebral column

Biomedical Human Anatomy (28 decks)

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