Muscles Origins, Insertions, Actions, Innervations Flashcards
1
Q
Pectoral is major insertion
A
Greater tubercle of the humerus
2
Q
Pectoralis major action
A
Prime mover of arm flexion; adduction, and medial rotation of arm
3
Q
Deltoid origin
A
Spine and acromion process of the scapula, lateral 1/3 of the clavicle
4
Q
Deltoid insertion
A
Deltoid tuberousity of humerus
5
Q
Deltoid action
A
Prime mover of arm abduction; synergist in flexion, extension
6
Q
Coracobrachialis origin
A
Coracoid process of scapula
7
Q
Coracobrachialis insertion
A
Mid medial shaft of humerus
8
Q
Coracobrachialis action
A
Arm flexion and adduction
9
Q
Serratus anterior origin
A
Ribs 1-8 (or 9)
10
Q
Serratus anterior insertion
A
Vertebral border of scapula
11
Q
Pectoralis minor origin
A
Ribs 3-5 (ventral surface)
12
Q
Pectoralis minor insertion
A
Coracoid process of scapula
13
Q
Long head of biceps brachii origin
A
Supraglenoid tubercle of the scapula
14
Q
Short head biceps brachii origin
A
Coracoid process of scapula
15
Q
Biceps brachii insertion
A
Radial tuberosity
16
Q
Biceps brachii action
A
Major forearm flexor; supinates the forearm; weak flexor of arm
17
Q
Brachialis origin
A
Anterior, distal surface of humerus
18
Q
Brachialis insertion
A
Coronoid process and tuberosity of ulna
19
Q
Brachialis action
A
Major forearm flexor
20
Q
Brachioradialis origin
A
Lateral epicondyle of humerus
21
Q
Brachioradialis insertion
A
Styloid process of radius
22
Q
Brachioradialis action
A
Forearm flexion
23
Q
Iliacus origin
A
Iliac fossa of the os coxa
24
Q
Iliacus insertion
A
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
