Muscles Origins, Insertions, Actions, Innervations Flashcards Preview

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

Flashcards in Muscles Origins, Insertions, Actions, Innervations Deck (131):
1

Pectoral is major insertion

Greater tubercle of the humerus

2

Pectoralis major action

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

3

Deltoid origin

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

4

Deltoid insertion

Deltoid tuberousity of humerus

5

Deltoid action

Prime mover of arm abduction; synergist in flexion, extension

6

Coracobrachialis origin

Coracoid process of scapula

7

Coracobrachialis insertion

Mid medial shaft of humerus

8

Coracobrachialis action

Arm flexion and adduction

9

Serratus anterior origin

Ribs 1-8 (or 9)

10

Serratus anterior insertion

Vertebral border of scapula

11

Pectoralis minor origin

Ribs 3-5 (ventral surface)

12

Pectoralis minor insertion

Coracoid process of scapula

13

Long head of biceps brachii origin

Supraglenoid tubercle of the scapula

14

Short head biceps brachii origin

Coracoid process of scapula

15

Biceps brachii insertion

Radial tuberosity

16

Biceps brachii action

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

17

Brachialis origin

Anterior, distal surface of humerus

18

Brachialis insertion

Coronoid process and tuberosity of ulna

19

Brachialis action

Major forearm flexor

20

Brachioradialis origin

Lateral epicondyle of humerus

21

Brachioradialis insertion

Styloid process of radius

22

Brachioradialis action

Forearm flexion

23

Iliacus origin

Iliac fossa of the os coxa

24

Iliacus insertion

Lesser trochanter of the femur

25

Iliacus action

Prime flexor of thigh, postural muscle

26

Psoas Major origin

Vertebrae T12-L5

27

Psoas Major insertion

Lesser trochanter of femur

28

Psoas major action

Prime flexor of thigh, postural muscle

29

Sartorius origin

Anterior superior iliac spine

30

Sartorius insertion

Medial proximal tibial shaft (near tibial tuberosity)

31

Sartorius action

Flexion and lateral rotation of thigh; flexion of lower leg

32

Rectus femoris origin

Anterior inferior iliac spine and superior margin of acetabulum

33

Rectus femoris insertion

Patella and tibial tuberosity via patellar ligament

34

Rectus femoris action

Thigh flexion, lower leg extension

35

Vastus lateralis origin

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

36

Vastus lateralis insertion

Patella and tibial tuberosity via patellar ligament

37

Vastus lateralis action

Lower leg extension and stabilizes patella

38

Vastus medialis origin

Linea aspera of femur

39

Vastus medialis insertion

Patella and tibial tuberosity via patellar ligament

40

Vastus medialis action

Lower leg extension and stabilizes patella

41

Vastus intermedius origin

Proximal anterolateral femoral shaft

42

Vastus intermedius insertion

Patella and tibial tuberosity via patellar ligament

43

Vastus intermedius action

Lower leg extension

44

Tensor fasciae latae origin

Anterior aspect of iliac crest and anterior superior iliac spine

45

Tensor fasciae latae insertion

Iliotibial tract

46

Tensor fasciae latae action

Abduction and flexion of thigh

47

Pectineus origin

Pubis of of coxa

48

Pectineus insertion

Pectineal line of femur

49

Pectineus action

Adduction and flexion of thigh

50

Gracilis origin

Ramus and body of pubis of os coxa

51

Gracilis insertion

Medial proximal tibial shaft

52

Gracilis action

Adducts thigh; flexes and medially rotates leg

53

Adductor longus origin

Inferior Ramus of pubis of os coxa

54

Adductor longus insertion

Linea aspera of femur

55

Adductor longus action

Adduction and medial rotation of thigh (when flexed)

56

Adductor Magnus origin

Ischial and pubic rami and ischial tuberosity of os coxa

57

Adductor Magnus insertion

Linea insertion of femur

58

Adductor Magnus action

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

59

Pectoralis Major origin

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

60

Latissimus Dorsi origin

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

61

Latissimus Dorsi insertion

Intertubercular groove of humerus

62

Latissimus Dorsi action

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

63

Supraspinatus origin

Supraspinous fossa of scapula

64

Infraspinatus origin

Infraspinous fossa of scapula

65

Infraspinatous insertion

Greater tubercle of humerus

66

Infraspinatus action

Stabilizes shoulder joint, laterally rotates arm

67

Supraspinatus insertion

Greater tubercle of humerus

68

Supraspinatus action

Stabilizes shoulder joint; abducts arm

69

Subscapularis origin

Subscapular fossa of scapula

70

Subscapularis insertion

Lesser tubercle of humerus

71

Subscapularis action

Prime medial rotator of arm; stabilizes shoulder joint

72

Teres minor origin

Lateral scapular border

73

Teres minor insertion

Greater tubercle of humerus

74

Teres minor action

Stabilizes shoulder joint; laterally rotates arm

75

Origin of triceps brachii long head

Infraglenoid tubercle of scapula

76

Origin of triceps brachii lateral head

Proximal end of lateral humeral margin

77

Origin of triceps brachii medial head

Distal to radial groove on posterior humeral shaft

78

Triceps brachii insertion

Olecranon process of ulna

79

Triceps brachii action

Prime extensor of forearm; extends arm

80

Aconeus origin

Lateral epicondyle of humerus

81

Aconeus insertion

Lateral aspect of olecranon process of ulna

82

Aconeus action

Abduction of ulna during forearm pronation; forearm extensor

83

Erector spinae action

Prime mover of back extension

84

Trapezius origin

Occipital bone, ligamentum nuchae, spinous process C7-T12

85

Trapezius insertion

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

86

Trapezius action

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

87

Levator scapulae origin

Transverse process of C1-C4

88

Levator scapulae insertion

Superior vertebral border of scapula

89

Rhomboideus major origin

Spinous process T2-T5

90

Rhomboideus major insertion

Medial border of scapula from spine to inferior angle

91

Rhomboideus major action

Adducts scapula and performs downward rotation of scapula

92

Rhomboideus minor origin

Spinous process C7-T1

93

Rhomboideus minor insertion

Medial border of scapula, superior to rhomboideus major

94

Rhomboideus minor action

Adducts scapula and performs downward rotation of scapula

95

Teres Major origin

Inferior angle of scapula

96

Teres major insertion

Intertubercular groove of humerus

97

Teres major action

Extension, medial rotation, and adduction of arm

98

Gluteus Maximus origin

Dorsal ilium, coccyx, sacrum, lumbodorsal fascia

99

Gluteus Maximus insertion

Gluteal tuberosity of femur and iliotibial tract

100

Gluteus Maximus action

Major thigh extensor; lateral rotation of thigh

101

Gluteus Medius origin

Anterior iliac crest of ilium between posterior and anterior gluteal lines

102

Gluteus Medius insertion

Greater trochanter of femur

103

Gluteus Medius action

Abduction and medial rotation of thigh; steadies pelvis

104

Gluteus minimus origin

Lateral surface of ilium between inferior and anterior gluteal lines

105

Gluteus minimus insertion

Greater trochanter of femur

106

Gluteus minimus action

Abduction and medial rotation of thigh; steadies pelvis

107

Piriformis origin

Anterolateral surface of sacrum

108

Piriformis insertion

Greater trochanter of femur

109

Piriformis action

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

110

Superior gemellus origin

Ischial spine

111

Superior gemellus insertion

Medial surface of greater trochanter of femur

112

Superior gemellus action

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

113

Obturator internus origin

Obturator membrane and obturator foramen

114

Obturator internus insertion

Greater trochanter of femur

115

Obturator internus action

Lateral rotation of thigh

116

Inferior gemellus origin

Ischial tuberosity

117

Inferior gemellus insertion

Medial surface of greater trochanter of femur

118

Inferior Gemellus action

Lateral rotation of thigh; abduction (when thigh flexed)

119

Quadratus femoris origin

Ischial tuberosity

120

Quadratus femoris insertion

Intertrochanteric crest of femur

121

Quadratus femoris action

Lateral rotation of thigh

122

Origin of biceps femoris long head

Ischial tuberosity

123

Origin of biceps femoris short head

Linea aspera and distal femur

124

Biceps femoris insertion

Head of fibula and lateral condyle of tibia

125

Biceps femoris action

Extension of thigh; flexion and lateral rotation of leg

126

Semitendinosus origin

Ischial tuberosity

127

Semitendinosus insertion

Medial aspect of proximal tibial shaft

128

Semitendinosus action

Extension of thigh; flexion and medial rotation of leg

129

Semimembranosus origin

Ischial tuberosity

130

Semimembranosus insertion

Medial condyle of tibia

131

Semimembranosus action

Extension of thigh; flexion and medial rotation of leg