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Anatomy > Muscles Origins, Insertions, Actions, Innervations > Flashcards

Muscles Origins, Insertions, Actions, Innervations Flashcards

1
Q

Pectoral is major insertion

A

Greater tubercle of the humerus

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2
Q

Pectoralis major action

A

Prime mover of arm flexion; adduction, and medial rotation of arm

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3
Q

Deltoid origin

A

Spine and acromion process of the scapula, lateral 1/3 of the clavicle

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4
Q

Deltoid insertion

A

Deltoid tuberousity of humerus

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5
Q

Deltoid action

A

Prime mover of arm abduction; synergist in flexion, extension

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6
Q

Coracobrachialis origin

A

Coracoid process of scapula

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7
Q

Coracobrachialis insertion

A

Mid medial shaft of humerus

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8
Q

Coracobrachialis action

A

Arm flexion and adduction

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9
Q

Serratus anterior origin

A

Ribs 1-8 (or 9)

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10
Q

Serratus anterior insertion

A

Vertebral border of scapula

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11
Q

Pectoralis minor origin

A

Ribs 3-5 (ventral surface)

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12
Q

Pectoralis minor insertion

A

Coracoid process of scapula

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13
Q

Long head of biceps brachii origin

A

Supraglenoid tubercle of the scapula

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14
Q

Short head biceps brachii origin

A

Coracoid process of scapula

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15
Q

Biceps brachii insertion

A

Radial tuberosity

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16
Q

Biceps brachii action

A

Major forearm flexor; supinates the forearm; weak flexor of arm

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17
Q

Brachialis origin

A

Anterior, distal surface of humerus

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18
Q

Brachialis insertion

A

Coronoid process and tuberosity of ulna

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19
Q

Brachialis action

A

Major forearm flexor

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20
Q

Brachioradialis origin

A

Lateral epicondyle of humerus

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21
Q

Brachioradialis insertion

A

Styloid process of radius

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22
Q

Brachioradialis action

A

Forearm flexion

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23
Q

Iliacus origin

A

Iliac fossa of the os coxa

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24
Q

Iliacus insertion

A

Lesser trochanter of the femur

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25
Q

Iliacus action

A

Prime flexor of thigh, postural muscle

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26
Q

Psoas Major origin

A

Vertebrae T12-L5

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27
Q

Psoas Major insertion

A

Lesser trochanter of femur

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28
Q

Psoas major action

A

Prime flexor of thigh, postural muscle

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29
Q

Sartorius origin

A

Anterior superior iliac spine

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30
Q

Sartorius insertion

A

Medial proximal tibial shaft (near tibial tuberosity)

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31
Q

Sartorius action

A

Flexion and lateral rotation of thigh; flexion of lower leg

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32
Q

Rectus femoris origin

A

Anterior inferior iliac spine and superior margin of acetabulum

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33
Q

Rectus femoris insertion

A

Patella and tibial tuberosity via patellar ligament

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34
Q

Rectus femoris action

A

Thigh flexion, lower leg extension

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35
Q

Vastus lateralis origin

A

Anterior and inferior border of greater trochanter and Linea aspera of femur

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36
Q

Vastus lateralis insertion

A

Patella and tibial tuberosity via patellar ligament

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37
Q

Vastus lateralis action

A

Lower leg extension and stabilizes patella

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38
Q

Vastus medialis origin

A

Linea aspera of femur

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39
Q

Vastus medialis insertion

A

Patella and tibial tuberosity via patellar ligament

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40
Q

Vastus medialis action

A

Lower leg extension and stabilizes patella

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41
Q

Vastus intermedius origin

A

Proximal anterolateral femoral shaft

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42
Q

Vastus intermedius insertion

A

Patella and tibial tuberosity via patellar ligament

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43
Q

Vastus intermedius action

A

Lower leg extension

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44
Q

Tensor fasciae latae origin

A

Anterior aspect of iliac crest and anterior superior iliac spine

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45
Q

Tensor fasciae latae insertion

A

Iliotibial tract

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46
Q

Tensor fasciae latae action

A

Abduction and flexion of thigh

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47
Q

Pectineus origin

A

Pubis of of coxa

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48
Q

Pectineus insertion

A

Pectineal line of femur

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49
Q

Pectineus action

A

Adduction and flexion of thigh

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50
Q

Gracilis origin

A

Ramus and body of pubis of os coxa

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51
Q

Gracilis insertion

A

Medial proximal tibial shaft

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52
Q

Gracilis action

A

Adducts thigh; flexes and medially rotates leg

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53
Q

Adductor longus origin

A

Inferior Ramus of pubis of os coxa

54
Q

Adductor longus insertion

A

Linea aspera of femur

55
Q

Adductor longus action

A

Adduction and medial rotation of thigh (when flexed)

56
Q

Adductor Magnus origin

A

Ischial and pubic rami and ischial tuberosity of os coxa

57
Q

Adductor Magnus insertion

A

Linea insertion of femur

58
Q

Adductor Magnus action

A

Extension, adduction, and medial rotation of thigh (when flexed)

59
Q

Pectoralis Major origin

A

Origin of clavicular head is clavicle. Sternocostal head is the sternum and costal cartilage 2-6.

60
Q

Latissimus Dorsi origin

A

Spines of T7-T12, L1-L5, ribs 8-12, iliac crest, and thoracolumbar fascia

61
Q

Latissimus Dorsi insertion

A

Intertubercular groove of humerus

62
Q

Latissimus Dorsi action

A

Prime arm extensor, adduction and medial rotation at the shoulder; depresses shoulder

63
Q

Supraspinatus origin

A

Supraspinous fossa of scapula

64
Q

Infraspinatus origin

A

Infraspinous fossa of scapula

65
Q

Infraspinatous insertion

A

Greater tubercle of humerus

66
Q

Infraspinatus action

A

Stabilizes shoulder joint, laterally rotates arm

67
Q

Supraspinatus insertion

A

Greater tubercle of humerus

68
Q

Supraspinatus action

A

Stabilizes shoulder joint; abducts arm

69
Q

Subscapularis origin

A

Subscapular fossa of scapula

70
Q

Subscapularis insertion

A

Lesser tubercle of humerus

71
Q

Subscapularis action

A

Prime medial rotator of arm; stabilizes shoulder joint

72
Q

Teres minor origin

A

Lateral scapular border

73
Q

Teres minor insertion

A

Greater tubercle of humerus

74
Q

Teres minor action

A

Stabilizes shoulder joint; laterally rotates arm

75
Q

Origin of triceps brachii long head

A

Infraglenoid tubercle of scapula

76
Q

Origin of triceps brachii lateral head

A

Proximal end of lateral humeral margin

77
Q

Origin of triceps brachii medial head

A

Distal to radial groove on posterior humeral shaft

78
Q

Triceps brachii insertion

A

Olecranon process of ulna

79
Q

Triceps brachii action

A

Prime extensor of forearm; extends arm

80
Q

Aconeus origin

A

Lateral epicondyle of humerus

81
Q

Aconeus insertion

A

Lateral aspect of olecranon process of ulna

82
Q

Aconeus action

A

Abduction of ulna during forearm pronation; forearm extensor

83
Q

Erector spinae action

A

Prime mover of back extension

84
Q

Trapezius origin

A

Occipital bone, ligamentum nuchae, spinous process C7-T12

85
Q

Trapezius insertion

A

Spine and acromion process of scapula, lateral 1/3 of clavicle

86
Q

Trapezius action

A

Stabilizes, elevates, retracts, depresses, and rotates scapula forward

87
Q

Levator scapulae origin

A

Transverse process of C1-C4

88
Q

Levator scapulae insertion

A

Superior vertebral border of scapula

89
Q

Rhomboideus major origin

A

Spinous process T2-T5

90
Q

Rhomboideus major insertion

A

Medial border of scapula from spine to inferior angle

91
Q

Rhomboideus major action

A

Adducts scapula and performs downward rotation of scapula

92
Q

Rhomboideus minor origin

A

Spinous process C7-T1

93
Q

Rhomboideus minor insertion

A

Medial border of scapula, superior to rhomboideus major

94
Q

Rhomboideus minor action

A

Adducts scapula and performs downward rotation of scapula

95
Q

Teres Major origin

A

Inferior angle of scapula

96
Q

Teres major insertion

A

Intertubercular groove of humerus

97
Q

Teres major action

A

Extension, medial rotation, and adduction of arm

98
Q

Gluteus Maximus origin

A

Dorsal ilium, coccyx, sacrum, lumbodorsal fascia

99
Q

Gluteus Maximus insertion

A

Gluteal tuberosity of femur and iliotibial tract

100
Q

Gluteus Maximus action

A

Major thigh extensor; lateral rotation of thigh

101
Q

Gluteus Medius origin

A

Anterior iliac crest of ilium between posterior and anterior gluteal lines

102
Q

Gluteus Medius insertion

A

Greater trochanter of femur

103
Q

Gluteus Medius action

A

Abduction and medial rotation of thigh; steadies pelvis

104
Q

Gluteus minimus origin

A

Lateral surface of ilium between inferior and anterior gluteal lines

105
Q

Gluteus minimus insertion

A

Greater trochanter of femur

106
Q

Gluteus minimus action

A

Abduction and medial rotation of thigh; steadies pelvis

107
Q

Piriformis origin

A

Anterolateral surface of sacrum

108
Q

Piriformis insertion

A

Greater trochanter of femur

109
Q

Piriformis action

A

Abduction (when thigh is flexed) and lateral rotation of thigh

110
Q

Superior gemellus origin

A

Ischial spine

111
Q

Superior gemellus insertion

A

Medial surface of greater trochanter of femur

112
Q

Superior gemellus action

A

Lateral rotation of thigh; abduction (when thigh is flexed)

113
Q

Obturator internus origin

A

Obturator membrane and obturator foramen

114
Q

Obturator internus insertion

A

Greater trochanter of femur

115
Q

Obturator internus action

A

Lateral rotation of thigh

116
Q

Inferior gemellus origin

A

Ischial tuberosity

117
Q

Inferior gemellus insertion

A

Medial surface of greater trochanter of femur

118
Q

Inferior Gemellus action

A

Lateral rotation of thigh; abduction (when thigh flexed)

119
Q

Quadratus femoris origin

A

Ischial tuberosity

120
Q

Quadratus femoris insertion

A

Intertrochanteric crest of femur

121
Q

Quadratus femoris action

A

Lateral rotation of thigh

122
Q

Origin of biceps femoris long head

A

Ischial tuberosity

123
Q

Origin of biceps femoris short head

A

Linea aspera and distal femur

124
Q

Biceps femoris insertion

A

Head of fibula and lateral condyle of tibia

125
Q

Biceps femoris action

A

Extension of thigh; flexion and lateral rotation of leg

126
Q

Semitendinosus origin

A

Ischial tuberosity

127
Q

Semitendinosus insertion

A

Medial aspect of proximal tibial shaft

128
Q

Semitendinosus action

A

Extension of thigh; flexion and medial rotation of leg

129
Q

Semimembranosus origin

A

Ischial tuberosity

130
Q

Semimembranosus insertion

A

Medial condyle of tibia

131
Q

Semimembranosus action

A

Extension of thigh; flexion and medial rotation of leg

Anatomy (16 decks)

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