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mcb 245 > Exam 3 > Flashcards

Exam 3 Flashcards

1
Q

Occipitofrontalis m. (frontal belly)

A

Elevates eyebrows and wrinkles skin of forehead

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2
Q

Occipitofrontalis m (occipital belly)

A

Retracts scalp

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3
Q

Orbicularis oculi m.

A

Closes eye, produces winking, blinking, squinting

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4
Q

Nasalis m.

A

Compresses bridge and depresses tip of nose

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5
Q

Procerus m.

A

Moves and wrinkles nose

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6
Q

Depressor anguli oris m.

A

Moves corners of mouth inferiorly and laterally (frowning muscles)

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7
Q

Depressor labii inferios m.

A

Moves lower lip inferiorly

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8
Q

Levator anguli oris m.

A

Moves corner of mouth superiorly and laterally

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9
Q

Levator labii superioris

A

“Opens lips
Raises and furrows the upper lip (‘Elvis lip snarl’) “

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10
Q

Mentalis m.

A

Protrudes lower lip (‘pouting’ muscle)

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11
Q

Orbicularis oris

A

Compresses and purses lips (‘kissing’ muscle)

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12
Q

Platysma m.

A

Pulls lower lip inferiorly, tenses skin of neck

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13
Q

Risorius

A

Moves corners of lips laterally

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14
Q

Zygomaticus major m.

A

Elevates corners of mouth (‘smile’)
Origin: Zygomatic bone
Insertion: Edge of mouth

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15
Q

Zygomaticus minor m.

A

Elevates corners of mouth (‘smile’)
Origin: Zygomatic bone
Insertion: Superior lip

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16
Q

Buccinator m.

A

Compress check
Origin: mandible and maxillae
Insertion: Orbicularis oris m.

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17
Q

Masseter m

A

Elevates and protracts mandible
Origin: Zygomatic arch
Insertion: Ramus and angle of mandible

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18
Q

Temporalis m.

A

Elevates and retracts mandible
Origin: Parietal bone
Insertion: Coronoid process of mandible

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19
Q

Flexion

A

bending movement that decreases angle between 2 parts

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20
Q

Extension

A

bending movement that increases angle between two parts

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21
Q

Adduction

A

motion that pulls structure or part toward midline of body or towards midline of limb

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22
Q

Abduction

A

motion that pulls structure or part away from midline of body or away from midline of limb

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23
Q

Elevation

A

movement in superior direction

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24
Q

Depression

A

movement in inferior direction

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25
Q

Rotation

A

moving or turning of body around its axis

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26
Q

Pronation

A

rotates forearm inward

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27
Q

Supination

A

rotates forearm outward

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28
Q

Dorsiflexion

A

lifts foot upward

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29
Q

Plantarflexion

A

pushes foot into ground

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30
Q

Protraction

A

posterior movement of body part from anatomical position

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31
Q

*Mylohyoid

A

Elevates hyoid bone and elevates floor of mouth
Origin: mandible
Insertion: Hyoid bone

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32
Q

*Digastric

A

Depresses mandible and elevates hyoid bone

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33
Q

*Omohyoid

A

Depresses hyoid
Origin: scapula
Insertion: hyoid

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34
Q

*Sternohyoid

A

Depresses hyoid bone
Origin: manubrium of sternum and clavicle
Insertion: Hyoid

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35
Q

Thyrohyoid

A

Depresses hyoid bone and elevates larynx

36
Q

Splenius capitis

A

Extends neck

37
Q

Levator scapulae

A

Elevates scapula and rotates

38
Q

Sternocleidomastoid m. (clavicular head)

A

Flexes neck (bilateral action); Lateral flexion and rotation of neck

Origin: Clavicle
Insertion: Mastoid process of temporal bone and occipital bone

39
Q

Sternocleidomastoid m. (sternal head)

A

Flexes neck (bilateral action); Lateral flexion and rotation of neck

Origin: Manubrium of sternum
Insertion: Mastoid process of temporal bone and occipital bone

40
Q

Scalene

A

Flexes neck;elevates ribs during forces inspiration

41
Q

Superior Rectus

A

Action: look superiorly
Origin: Sphenoid
Insertion: superior region of eye

42
Q

Inferior rectus

A

Action: look inferiorly
Origin: Sphenoid
Insertion: inferior region of eye

43
Q

Medial rectus

A

Action: look medially
Origin: Sphenoid
Insertion: medial region of eye

44
Q

Lateral rectus

A

Action: look laterally
Origin: Sphenoid
Insertion: lateral region of eye

45
Q

Superior oblique

A

Looks inferiorly and laterally, top of eye rotates medially
Origin: Sphenoid
Insertion: Lateral region of eye

46
Q

Inferior oblique

A

Looks superiorly and laterally, bottom of eye rotates medially
Origin: Maxilla
Insertion: Lateral region of eye

47
Q

Genioglossus

A

protracts tongue

48
Q

Hyoglossus

A

Depresses & retracts tongue

49
Q

Palatoglossus

A

Elevates tongue

50
Q

Styloglossus

A

Elevates & retracts tongue

51
Q

Pharyngeal constrictor

A

Constricts pharaynx

52
Q

Levator veli palatini

A

Elevates soft palate when swallowing

53
Q

Tensor veli palatini

A

Tenses soft palate when swallowing

54
Q

External intercostal

A

Elevates ribs
Origin: Inferior border of superior rib
Insertion: Superior border of inferior rib

55
Q

External oblique

A

Flexes vertebral column and compresses abdomen (bilateral action); lateral flexion and rotation of vertebral column (unilateral action)

Origin: Ribs 5-12
Insertion: Linea alba

56
Q

Internal intercostal

A

Depresses ribs
Origin: Superior border of inferior ribs
Insertion: Inferior border of superior rib

57
Q

Internal oblique

A

Flexes vertebral column and compresses abdomen (bilateral action); lateral flexion and rotation of vertebral column (unilateral action)

58
Q

Pectoralis major

A

Flexes arm
Adducts arm
Medial rotation of arm

Origin: Clavicle, Ribs, Sternum
Insertion: Humerus

59
Q

Pectoralis minor

A

Protraction/abduction of scapula
depresses scapula

Origin: Coracoid process of scapula
Insertion: Ribs

60
Q

Rectus abdominis

A

Flexes vertebral column & compresses abdominal wall

Origin: Xiphoid process of sternum, Ribs 5-7
Insertion: Pubis

61
Q

Serratus anterior

A

Protraction of scapula

62
Q

Transverse abdominis

A

Flexes vertebral column and compresses abdomen (bilateral action); lateral flexion and rotation of vertebral column (unilateral action)

63
Q

Linea alba

A

Vertical fibrous strip that connects left and right rectus sheaths

64
Q

Rectus sheath

A

Fibrous sleeve that encloses rectus abdominis

65
Q

Layers

A

External oblique -> Internal oblique and rectus abdominis -> transverse abdominis

66
Q

Biceps brachii (short head)

A

Flexion and supination of forearm

Origin: Scapula
Insertion: Radial tuberosity of radius

67
Q

Biceps brachii (long head)

A

Flexion and supination of forearm
Origin: Scapula
Insertion: Radial tuberosity of radius

68
Q

Trapezius

A

Elevate, depress, retract scapula
Origin: occipital bone & spinous processes C7-T12
Insertion: Clavicle, acromion process, and spine of scapula

69
Q

Deltoid

A

Abduction of arm
Origin: Acromial end of clavicle, acromion, spine of scapula
Insertion: Deltoid tuberosity of humerus

70
Q

Pectoralis major

A

Flexes, adducts, medial rotation of arm
Origin: Clavicle, ribs, sternum
Insertion: Humerus

71
Q

Latissimus dorsi

A

Extends, adducts, medial rotation of arm

72
Q

Coracobrachialis

A

Flexion and adduction of arm
Origin: Coracoid process of scapula
Insertion: Humerus

73
Q

Subclavius

A

Depress clavicle
Origin: 1st rib
Insertion: Clavicle

74
Q

Subscapularis

A

Medial rotation of arm
Origin: Subscapular fossa of scapula
Insertion: Lesser tubercle of humerus

75
Q

Pectoralis minor

A

Protraction/abduction, depresses scapula
Origin: Coracoid process of scapula
Insertion: Ribs

76
Q

Teres minor

A

Adduction & lateral rotation of arm
Origin: Scapula
Insertion: humerus

77
Q

Teres major

A

Extension, adduction, medial rotation of arm
Origin: Scapula
Insertion: Humerus

78
Q

Rhomboid minor

A

Elevates and retracts scapula
Origin: Spinous process of vertebrae
Insertion: Medial border of scapula

79
Q

Rhomboid minor

A

Elevates and retracts scapula
Origin: Spinous process of vertebrae
Insertion: Medial border of scapula

80
Q

Supraspinatus

A

Abduction of arm
Origin: Supraspinous fossa of scapula
Insertion: Greater tubercle of humerus

81
Q

Infraspinatus

A

Lateral rotation of arm
Origin: Infraspinous fossa of scapula
Insertion: Greater tubercle of humerus

82
Q

Serratus posterior

A

Elevates and depresses ribs during forced inspiration/expiration

83
Q

Triceps brachii (long head)

A

Extension of forearm
Origin: Scapula
Insertion: Olecranon of ulna

84
Q

Triceps brachii (lateral head)

A

Extension of forearm
Origin: Humerus
Insertion: Olecranon of ulna

85
Q

Triceps brachii (medial head)

A

Extension of forearm
Origin: Humerus
Insertion: Olecranon of ulna

86
Q

Erector spinae

A

Extends vertebral column (bilateral); lateral flexion of vertebral column (unilateral)

87
Q

Semispinalitis capitis

A

Extends vertebral column (bilateral); lateral flexion of vertebral column (unilateral)

mcb 245 (5 decks)

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