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MSAKT > Midterm Muscles > Flashcards

Midterm Muscles Flashcards

1
Q

What is the origin of the occipitofrontalis

A

occipitalis: superior nuchal line and mastoid process,
frontalis: galea aponeurotica

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2
Q

What is the insertion of the occipitofrontalis?

A

occipitalis: galea aponeurotica
frontalis: fascia and skin superior to eyes and nose

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3
Q

What are the functions of the occipitofrontalis

A

draws scalp posteriorly, draws scalp anteriorly, elevates eyebrows

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4
Q

What is the origin of the temporalis

A

temporal fossa

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5
Q

What is the insertion of the temporalis?

A

coronoid process and anterior border of ramus

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6
Q

What are the functions of the temporalis

A

elevation of mandible @TMJ, retraction of mandible @ TMJ

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7
Q

What is the origin of the masseter?

A

zygomatic arch

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8
Q

What is the insertion of the masseter?

A

angle and ramus of mandible

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9
Q

What are the functions of the masseter

A

elevation and protraction of mandible @ TMJ

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10
Q

What is the origin of platysma?

A

the fascia cover the upper parts of the pectoralis major and deltoid

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11
Q

What is the insertion of the platysma?

A

mandible and subcutaneous fascia of lower face

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12
Q

What are the functions of the platysma?

A

draws up the skin of superior chest and neck creating ridges, depresses and draws lower lip laterally

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13
Q

What is the origin of the SCM

A

medial 1/3 of clavicle, manubrium of sternum

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14
Q

What is the insertion of the SCM?

A

mastoid process and lateral 1/2 of superior nuchal line

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15
Q

What are the functions of the SCM?

A
  1. flexion of neck @ spinal joints
  2. extension of head @ AOJ
  3. extension of neck @ spinal joints
  4. lateral flexion of neck @ spinal joints
  5. lateral flexion of head @ AOJ
  6. contralateral rotation of head @AAJ
  7. contralateral rotation of neck @ spinal joints
  8. elevation of sternum and clavicle during forced inhalation
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16
Q

What is the origin of the Trapezius?

A

upper: EOP, medial superior nuchal line, ligamentum nuchae @ SPC7;
middle: SP of T1-T5
lower: SP of T6-T12

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17
Q

What is the insertion of the trapezius

A

upper: lateral clavicle and acromion process
middle: acromion and spine of scapula
lower: tubercle @ root of spine of scapula

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18
Q

What are the functions of the trapezius?

A
  1. extension of head @ AOJ
  2. lat flexion of head @AOJ
  3. ext of neck @ spinal joints
  4. lat flexion of neck @ spinal joints
  5. contralateral rotation of head @ AAJ
  6. contralateral rotation of neck @ spinal joints
  7. upward rotation of scapula @ STJ
  8. elevation of scapula @ STJ
  9. retraction of scapula @ STJ
  10. depression of scapula @ SCJ
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19
Q

What is the origin of rhomboid major?

A

SP of T2 to T5

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20
Q

What is the insertion of the rhomboid major?

A

vertebral border of scapula inferior to spine

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21
Q

What is the origin of rhomboid minor?

A

SP of C7-T1

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22
Q

What is the insertion of the rhomboid minor?

A

vertebral border of scapula @ root of spine

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23
Q

What are the functions of the rhomboids

A
  1. retraction of scapula @ STJ
  2. downward rotation of scapula @ STJ
  3. elevation of scapula @STJ
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24
Q

What is the origin of the levator scapulae

A

TP of C1-C4

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25
Q

What is the insertion of levator scapulae

A

medial border of scapula above the spine at the level of superior angle

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26
Q

What are the functions of the levator scapulae

A
  1. lateral flexion of neck @ spinal joints
  2. elevation of scapula @ STJ
  3. extension of neck @ spinal joints
  4. downward rotation of scapula @ STJ
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27
Q

What is the origin of pectoralis minor?

A

3-5 ribs

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28
Q

What is the insertion of the pectoralis minor

A

coracoid process of scapula

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29
Q

What are the functions of pectoralis minor?

A
  1. protraction of scapula @ STJ
  2. downward rotation of scapula @ STJ
  3. Elevation of ribs during forced inhalation @ Sternocostal and costovertebral joitns
  4. depression of scapula @ STJ
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30
Q

What is the origin of subclavius?

A

rib 1

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31
Q

What is the insertion of subclavius

A

subclavian groove of claviclea

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32
Q

What are the functions of the subclavius

A
  1. depression of clavicle @ sternoclavicular and acromioclavicular joints
  2. protraction of clavicle
  3. elevates rib 1 @ sternocoastal and costovertebral joint
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33
Q

What is the origin of the serratus anterior?

A

ribs 1-9

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34
Q

What is the insertion of the serratus anterior

A

anterior surface of vertebral border of scapula

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35
Q

What are the functions of the serratus anterior

A

protraction and upward rotation of scapula @ STJ

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36
Q

What is the origin of the pectoralis major

A

medial 1/2 of clavicle and sternum and costal cartilages 1-7

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37
Q

What is the insertion of the pectoralis major

A

lateral lip of bicipital groove of humerus

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38
Q

What are the functions of the pectoralis major

A

adduction, horizontal adduction, medial rotation, flexion of arm @GHJ

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39
Q

What is the origin of the latissimus dorsi?

A

SP of T7-L5, crests of ilium and sacrum, ribs 9-12

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40
Q

What is the insertion of the latissimus dorsi?

A

floor of bicipital groove

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41
Q

What are the functions of the latissimus dorsi?

A

medial rotation, extension, adduction of arm @ GHJ; anterior tilt of pelvis @ lumbosacral joint

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42
Q

What is the origin of the delotid?

A

ant: lateral clavicle, lat: acomion, post: spine of scapula

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43
Q

What is the insertion of the deltoid

A

deltoid tuberosity of humerus

44
Q

What are the functions of the deltoid?

A

abduction, horizontal adduction, medial rotation, flexion, lateral rotation, extension and horizontal abduction of arm @ GHJ

45
Q

What is the origin of the subscapularis

A

subscapular fossa

46
Q

What is the insertion of the subscapularis

A

lesser tubercle of humerus

47
Q

What are the functions of subscapularis

A

medial rotation of arm @ GHJ

48
Q

What is the origin of infraspinatus

A

infraspinous fossa of scapula

49
Q

What is the insertion of the infraspinatus

A

middle facet of greater tubercle of humerus

50
Q

What are the functions of the infraspinatus

A

lateral rotation of arm @ GHJ

51
Q

What is the origin of teres minor

A

superior lateral border of scapula

52
Q

What is the insertion of the teres minor

A

inferior facet of greater tubercle of humerus

53
Q

What are the functions of the teres minor

A

lateral rotation of arm @ GHJ

54
Q

What is the origin of the supraspinatus

A

supraspinous fossa of scapula

55
Q

What is the insertion of the supraspinatus

A

superior facet of greater tubercle of humerus

56
Q

What are the functions of supraspinatus

A

abduction of arm @ GHJ

57
Q

What is the origin of teres major?

A

inferior lateral border of scapula

58
Q

What is the insertion of teres major

A

medial lip of bicipital groove

59
Q

What are the actions of the teres major

A

medial rotation, adduction, extension of arm @ GHJ

60
Q

What is the origin of biceps brachii

A

short: coacoid process; long: supraglenoid tubercle of scapula

61
Q

What is the insertion of the biceps brachii

A

radial tuberosity and bicipital aponeourosis

62
Q

What are the functions of biceps brachii

A

flexion of arm @ GHJ and forearm @ elbow joint, supination of forearm @ radioulnar joints

63
Q

What is the origin of the coracobrachialis

A

coracoid process of scapula

64
Q

What is the insertion of coracobrachialis

A

middle portion of medial surface of humerus

65
Q

What are the functions of coracobrachialis

A

flexion and adduction of arm @ gHJ

66
Q

What is the origin of the brachialis?

A

distal half of the anterior surface of the humerus

67
Q

What is the insertion of the brachialis

A

ulnar tuberosity and coronoid process of ulna

68
Q

What are the functions of the brachialis

A

flexion of forearm @ elbow joint

69
Q

What is the origin of the triceps brachii

A

long: infraglenoid tubercle; lat: superior to radial groove; med:inferior to radial groove

70
Q

What is the insertion of the triceps brachii

A

olecranon

71
Q

What is the functions of triceps brachii

A

ext of arm @ GHJ, ext of forearm @ elbow joint

72
Q

What is the origin of pronator teres

A

humeral: medial epicondyle via common flexor tendon; ulnar: coronoid process of ulna

73
Q

What is the insertion of pronator teres?

A

pronator tubercle of radius

74
Q

What are the functions of pronator teres

A

pronation of forearm @ radioulnar joints, weak flexion of forearm @ elbow joint

75
Q

What is the origin of flexor carpi radialis

A

medial epicondyle via common extensor tendon

76
Q

What is the insertion of flexor carpi radialis

A

base and 2nd and 3rd metacarpals

77
Q

What is the functions of flexor carpi radialis

A

flexion and radial deviation of hand @ wrist joint, weak flexion of forearm @ elbow joint

78
Q

What is the origin of palmaris longus

A

med epicondyle via common extensor tendon

79
Q

What is the insertion of the palmaris longus

A

flexor retinaculum and palmar aponeourosis

80
Q

What are the functions of he palmaris longus

A

flexion of hand @ wrist joint, weak flexion of forearm @ elbow joint

81
Q

What is the origin of the flexor carpi ulnaris

A

medial epicondyle via common flexor tendon, medial olecranon, superior posterior border of ulna

82
Q

What is the insertion of the flexor carpi ulnaris

A

base of 5th metacarpal, hook of hamete, pisiform

83
Q

What are the functions of flexor carpi ulnaris

A

flexion and ulnar deviation of hand @ wrist joint, weak flexion of forearm @ elbow joint

84
Q

What is the origin of the brachioradialis?

A

proximal 1/3 of lateral supracondylar ridge

85
Q

What is the insertion of the brachioradialis?

A

superior to styloid process of radius

86
Q

What are the functions of brachioradialis?

A

flexion of forearm @ elbow joint

87
Q

What is the origin of the extensor carpi radialis longus?

A

distal 1/3 of lateral supracondylar ride

88
Q

What is the insertion of the extensor carpi radialis longus?!

A

base of second metacarpal

89
Q

What are the functions of the extensor carpi radialis longus?

A

extension and radial deviation of hand @ wrist joint

90
Q

What is the origin of the extensor carpi radialis brevis

A

lateral epicondyle via common extensor tendon

91
Q

What is the insertion of the extensor carpi radialis brevis

A

base of third metacarpal

92
Q

What are the functions of the extensor carpi radialis brevis

A

extension and radial deviation of hand @ wrist joint

93
Q

What is the origin of the extensor digitorum?

A

lateral epicondyle via common extensor tendon

94
Q

What is the insertion of the extensor digitorum

A

distal and middle phalanges of digits 2-5 via their extensor hoods

95
Q

What are the functions of the extensor digitorum?

A

extension of digits 2-5 @ CMP, PIP, DIP; weak ext of forearm @ elbow joint, extension of hand @ wrist joint

96
Q

What is the origin of the extensor digiti minimi

A

lateral epicondyle of humerus via common extensor tendon

97
Q

What is the insertion of the extensor digiti minimi

A

middle and distal phalanges of pinkie via its extensor hood

98
Q

What are the functions of the extensor digiti minimi

A

ext of pinking @ MCP, PIP, DIP; ext of hand @ wrist joint; weak extension of forearm @ elbow joint

99
Q

What is the origin of the extensor carpi ulnaris?

A

lateral epicondyle of humerus via common extensor tendon, middle posterior border of ulna

100
Q

What is the insertion of the extensor carpi ulnaris

A

base of 5th metacarpa

101
Q

What are the functions of the extensor carpi ulnaris?

A

extension, ulnar deviation of hand @ wrist joint, extension of forearm @ elbow joint

102
Q

What is the origin of the anconeus

A

lateral epicondyle of humerus NOT VIA COMMON EXTENSOR TENDON

103
Q

What is the insertion of the anconeus

A

lateral side of olecranon and proximal 1/4 of posterior surface of shaft of ulna

104
Q

What are the functions of the anconeus

A

extension of forearm @ elbow joint

105
Q

What is the origin of the supinator?

A

supinator crest of ulna, lateral epicondyle of humerus

106
Q

What is the insertion of the supinator

A

proximal of lateral surface of radius

107
Q

What is the functions of the supinator

A

supination of forearm @ radioulnar joints

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