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Muscles Flashcards

1
Q

ILIACUS origin

A

anterior/inferior surface of iliac crest

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2
Q

ILIACUS insertion

A

lesser trochanter of femur

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3
Q

ILIACUS action/innervation

A

Flexes hip

L2, L3
Femoral N.

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4
Q

PSOAS MAJOR origin

A

anterolateral surface of T12 to L5 vertebra

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5
Q

PSOAS MAJOR insertion

A

lesser trochanter of femur

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6
Q

PSOAS MAJOR action/innervation

A

Flexes hip

L2, L3
Femoral N.

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7
Q

iliopsoas muscle

A

iliacus and psoas major

*Different origins, same insertions/action/innervation

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8
Q

ADDUCTOR MAGNUS magnus origin

A

ischium and pubis

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9
Q

ADDUCTOR MAGNUS insertion

A

Linea aspera and adductor tubercle

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10
Q

ADDUCTOR MAGNUS action/innervation

A

adducts hip

Obturator N.
Sciatic N.

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11
Q

GRACILIS origin

A

pubis

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12
Q

GRACILIS insertion

A

pes anserine (anteromedial proximal tibia)

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13
Q

GRACILIS action/innervation

A

adducts hip
flexes knee

Obturator N.

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14
Q

RECTUS FEMORIS origin

A

anterior inferior iliac spine

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15
Q

RECTUS FEMORIS insertion

A

tibial tuberosity

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16
Q

RECTUS FEMORIS action/innervation

A

flexes hip
extends knee

Femoral N.

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17
Q

VASTUS LATERALIS origin

A

lateral anterior surface of femur

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18
Q

VASTUS LATERALIS insertion

A

tibial tuberosity

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19
Q

VASTUS LATERALIS action/innervation

A

extends knee

Femoral N.

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20
Q

VASTUS INTERMEDIUS origin

A

middle anterior surface of femur

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21
Q

VASTUS INTERMEDIUS insertion

A

tibial tuberosity

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22
Q

VASTUS INTERMEDIUS action/innervation

A

extends knee

Femoral N.

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23
Q

BICEPS FEMORIS origin

A

Long head - ischial tuberosity

Short head - linea aspera of femur

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24
Q

BICEPS FEMORIS insertion

A

fibular head

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25
Q

BICEPS FEMORIS action/innervation

A

Long head - extends hip and flexes knee
Short head - flexes knee ONLY

Long head - Sciatic N.
Short head - Common Peroneal N.

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26
Q

GLUTEUS MAXIMUS origin

A

posterior sacrum and ilium

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27
Q

GLUTEUS MAXIMUS insertion

A

greater trochanter of femur and iliotibial band

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28
Q

GLUTEUS MAXIMUS action/innervation

A

extends and externally rotates hip

Inferior Gluteal N.

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29
Q

SOLEUS origin

A

posterior tibia and fibula

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30
Q

SOLEUS insertion

A

calcaneus via the Achilles’ tendon

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31
Q

SOLEUS action/innervation

A

plantar flexes ankle

Tibial N.

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32
Q

GASTROCNEMIUS origin

A

posterior medial and lateral condyles of femur

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33
Q

GASTROCNEMIUS insertion

A

calcaneus via Achilles’ tendon

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34
Q

GASTROCNEMIUS action/innervation

A

plantar flexes ankle
flexes knee

Tibial N.

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35
Q

PERONEUS LONGUS origin

A

lateral superior fibula

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36
Q

PERONEUS LONGUS insertion

A

plantar surface of cuneiforms and first metatarsal (MT)

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37
Q

PERONEUS LONGUS action/innervation

A

everts foot
plantar flexes ankle (assists)

Superficial Peroneal N.

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38
Q

INTERNAL OBLIQUE origin

A

inguinal ligament

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39
Q

INTERNAL OBLIQUE insertion

A

10 to 12 ribs

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40
Q

INTERNAL OBLIQUE action/innervation

A

Bilateral: flexes trunk
Unilateral: side bends trunk, rotates trunk ipsilateral

8th to 12th Intercostal N.’s
Iliohypogastric N.
Ilioinguinal N.

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41
Q

EXTERNAL OBLIQUE origin

A

5 to 12 ribs laterally

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42
Q

EXTERNAL OBLIQUE insertion

A

iliac crest

linea alba

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43
Q

EXTERNAL OBLIQUE action/innervation

A

Bilateral: flexes trunk
Unilateral: side bends trunk, rotates trunk contralateral

8th to 12th Intercostal N.’s
Iliohypogastric N.
IIioinguinal N.

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44
Q

Erector Spinae muscles

A

*multiple smaller muscles along length of spine

Spinalis
Longissimus
Iliocostalis

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45
Q

ERECTOR SPINAE origins

A

spinous and transverse processes and posterior ribs from the occiput to the sacrum and ilium

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46
Q

ERECTOR SPINAE insertions

A

spinous and transverse processes and posterior rubs from the occiput to the sacrum and ilium

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47
Q

ERECTOR SPINAE action/innervation

A

Bilateral: extend neck and trunk
Unilateral: longissimus and iliocostalis side bend trunk, rotates head and trunk ipsilateral

Spinal N.’s from occiput to sacrum

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48
Q

SUPINATOR origin

A

posterolateral ulna and lateral epicondyle of humerus

49
Q

SUPINATOR insertion

A

anterior proximal radius

50
Q

SUPINATOR action/innervation

A

supinates forearm

Radial N.

51
Q

TERES MINOR origin

A

axillary border of scapula

52
Q

TERES MINOR insertion

A

greater tubercle of humerus

53
Q

TERES MINOR action/innervation

A

external rotation of shoulder
depresses humeral head

Axillary N.

54
Q

TRICEPS BRACHII origin

A

medial head: posterior distal humerus
lateral head: lateral humerus
long head: infraglenoid tubercle of scapula

55
Q

TRICEPS BRACHII insertion

A

olecreanon process of the ulna

56
Q

TRICEPS BRACHII action/innervation

A

extend elbow
long head - extends shoulder (assists)

Radial N.

57
Q

DELTOID origin

A

anterior: clavicle
middle: acromion process of scapula
posterior: spine of scapula

58
Q

DELTOID insertion

A

deltoid tuberosity of humerus

59
Q

DELTOID action/innervation

A

ALL: abduct shoulder (primary)

anterior: internal rotation and horizontally adducts shoulder, flexes shoulder (primary)
posterior: external rotation and horizontally abducts, extends shoulder (primary)

Axillary N.

60
Q

LATISSIMUS DORSI origin

A

inferior angle of scapula; spinous processes T7 to T12; lumbodorsal fascia; sacrum; iliac crest, inferior angle

61
Q

LATISSIMUS DORSI insertion

A

base (floor) of the bicipital (intertuburcular groove) of the humerus

62
Q

LATISSIMUS DORSI action/innervation

A

extends and internally rotates the shoulder

Thoracodorsal N.

63
Q

LEVATOR SCAPULA origin

A

transverse processes of C1 to C4

64
Q

LEVATOR SCAPULA insertion

A

superior angle of the scapula

65
Q

LEVATOR SCAPULA action/innervation

A

elevates and downward rotates scapula

C3, C4 nerve roots
Dorsal Scapular N.

66
Q

TRAPEZIUS origin

A

superior nuchal line of occipital bone; ligamentum nuchae; spinous processes and supraspinous ligament of C1 to T12

67
Q

TRAPEZIUS insertion

A

upper: lateral clavicle, acromion process
middle: spine of scapula
lower: spine of scapula

68
Q

TRAPEZIUS action/innervation

A

upper: elevates and upward rotates scapula
middle: retracts scapula
lower: depresses and upward rotates scapula

C3, C4 spinal nerve roots
Spinal Accessory N. (CN XI)

69
Q

PRONATOR TERES origin

A

medial epicondyle of humerus

70
Q

PRONATOR TERES insertion

A

midshaft of radius

71
Q

PRONATOR TERES action/innervation

A 
pronates forearm
flexes elbow (assists)

Median N.

72
Q

BRACHIALIS origin

A

anterior lower half of humerus

73
Q

BRACHIALIS insertion

A

coronoid process of ulna

74
Q

BRACHIALIS action/innervation

A

flexes elbow (primary when forearm pronated)

Musculocutaneous N.

75
Q

SUBSCAPULARIS origin

A

subscapular fossa

76
Q

SUBSCAPULARIS insertion

A

lesser tubercle of the humerus

77
Q

SUBSCAPULARIS action/innervation

A

internal rotation of shoulder
depresses humeral head

Upper and Lower Subscapular N.’s

78
Q

BICEPS BRACHII origin

A

short head: coracoid process of scapula

long head: supraglenoid tubercle of scapula

79
Q

BICEPS BRACHII insertion

A

radial tuberosity

80
Q

BICEPS BRACHII action/innervation

A 
flexes elbow (primary when forearm supinated)
supinates forearm
long head: flexes shoulder (assists)

Musculocutaneous N.

81
Q

SUPRASPINATUS origin

A

supraspinous fossa of scapula

82
Q

SUPRASPINATUS insertion

A

greater tubercle of humerus

83
Q

SUPRASPUNATUS action/innervation

A

abducts shoulder
elevates humeral head

Suprascapular N.

84
Q

INFRASPINATUS origin

A

infraspinatus fossa of scapula

85
Q

INFRASPINATUS insertion

A

greater tubercle of humerus

86
Q

INFRASPINATUS action/innervation

A

external rotation of shoulder
depresses humeral head

Suprascapular N.

87
Q

PERONEUS BREVIS origin

A

lateral middle fibula

88
Q

PERONEUS BREVIS insertion

A

base of 5th metatarsal

89
Q

PERONEUS BREVIS action/innervation

A

everts foot
plantar flexes ankle (assists)

Superficial Peroneal N.

90
Q

TIBIALIS ANTERIOR origin

A

lateral tibia and interosseous membrane

91
Q

TIBIALIS ANTERIOR insertion

A

1st cuneiform and 1st metatarsal

92
Q

TIBIALIS ANTERIOR action/innervation

A

dorsiflexes ankle
inverts foot

Deep Peroneal N.

93
Q

TIBIALIS POSTERIOR origin

A

posterior fibula and tibia

interosseous membrane

94
Q

TIBIALIS POSTERIOR insertion

A

plantar surface of navicular, tarsals, and metatarsals

95
Q

TIBIALIS POSTERIOR action/innervation

A

plantar flexes ankle
inverts foot

Tibial N.

96
Q

RECTUS ABDOMINIS origin

97
Q

RECTUS ABDOMINIS insertion

A

ribs 5 to 7

98
Q

RECTUS ABDOMINIS action/innervation

A

flexes trunk

7th to 12th Intercostal N.’s

99
Q

STERNOCLEIDOMASTOID origin

A

sternum and clavicle

100
Q

STERNOCLEIDOMASTOID insertion

A

mastoid process of temporal bone

101
Q

STERNOCLEIDOMASTOID action/innervation

A

bilateral: extends head, flexes neck
unilateral: side bends neck
rotates head contralateral

C2, C3 spinal nerves
Spinal Accessory N.

102
Q

VASTUS MEDIALIS origin

A

medial anterior surface of femur

103
Q

VASTUS MEDIALIS insertion

A

tibial tuberosity

104
Q

VASTUS MEDIALIS action/innervation

A

extends knee

Femoral N.

105
Q

SARTORIUS origin

A

anterior superior iliac spine

106
Q

SARTORIS insertion

A

pes anserine (anteromedial proximal tibia)

107
Q

SARTORIS action/innervation

A

flexes, abducts, and externally rotates hip
flexes knee

Femoral N.

108
Q

TENSOR FASCIA LATAE origin

A

anterolateral iliac crest

109
Q

TENSOR FASCIA LATAE insertion

A

iliotibial band to the lateral condyle of tibia

110
Q

TENSOR FASCIA LATAE action/innervation

A

flexes, abducts, and internally rotates hip
extends knee

Superior Gluteal N.

111
Q

GLUTEUS MEDIUS origin

A

lateral/outer surface of ilium

112
Q

GLUTEUS MEDIUS insertion

A

greater trochanter of the femur

113
Q

GLUTEUS MEDIUS action/innervation

A

abducts hip
anterior fibers internally rotate hip
posterior fibers externally rotate hip

Superior Gluteal N.

114
Q

SEMITENDINOSUS origin

A

ischial tuberosity

115
Q

SEMITENDINOSUS insertion

A

pes anserine (anteromedial proximal tibia)

116
Q

SEMITENDINOSUS action/innervation

A

extends hip
flexes knee

Sciatic N.

117
Q

SEMIMEMBRANOSUS origin

A

ischial tuberosity

118
Q

SEMIMEMBRANOSUS insertion

A

posteromedial condyle of tibia

119
Q

SEMIMEMBRANOSUS action/innervation

A

extends hip
flexes knee

Sciatic N.

PTA (1 decks)

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