Origins and Insertions Flashcards
(93 cards)
1
Q
Gastrocnemius O
A
O:
Medial and Lateral Condyles of femur (Posterior)
2
Q
Gastrocnemius I
A
I:
Calcaneus via Achilles Tendon
3
Q
Gastrocnemius N
A
N:
Tibial Nerve
4
Q
Gastrocnemius A
A
A:
- Ankle plantarflexion when knee is extended
- Assists with knee flexion when ankle is dorsiflexed
5
Q
Tibialis Anterior
O-1
A
O-1:
Lateral condyle of tibia
6
Q
Tibialis Anterior
O-2
A
O-2:
Upper 2/3 tibial shaft
7
Q
Tibialis Anterior
I-1
A
I-1:
Inferior surface medial cuneiform
8
Q
Tibialis Anterior
I-2
A
I-2:
Inferior surface 1st metatarsal
9
Q
Tibialis Anterior
N
A
N:
Peroneal Nerve
10
Q
Tibialis Anterior
A
A
A: Ankle dorsiflexion (prime mover)
11
Q
Semimembranosus
O
A
O:
Ischial tuberosity
12
Q
Semimembranosus
I
A
I:
Medial condyle of tibia
13
Q
Semimembranosus
N
A
N:
Sciatic Nerve
14
Q
Semimembranosus
A
A
A:
- Hip extension
- Knee flexion
- Hip internal rotation
15
Q
Biceps Femoris (long head) O-1
A
O-1:
Ischial tuberosity
16
Q
Biceps Femoris (long head) O-2
A
O-2:
Linear Aspera
17
Q
Biceps Femoris (long head) I-1
A
I-1:
Head of fibula
18
Q
Biceps Femoris (long head) I-2
A
I-2:
Lateral condyle of tibia
19
Q
Biceps Femoris (long head) N:
A
N:
Sciatic nerve
20
Q
Biceps Femoris (long head) A:
A
A:
- Hip extension
- Knee flexion
21
Q
Adductor Longus
O
A
O:
Anterior pubis
22
Q
Adductor Longus
I
A
I:
Linear Aspera
23
Q
Adductor Longus
N
A
N:
Obturator Nerve
24
Q
Adductor Longus
A
A
A:
- Hip adduction
- Hip internal rotation
- Hip flexion
25
Rectus femoris
| O
O:
| Anterior inferior iliac spine and superior margin of acetabulum
26
Rectus femoris
| I
I:
| Patella and Tibial Tuberosity (via patellar tendon)
27
Rectus femoris
| N
N:
| Femoral Nerve
28
Rectus femoris
| A:
A:
| Knee extension + assists with hip flexion
29
Extensor Carpi Ulnaris
| O
O:
| Lateral epicondyle
30
Extensor Carpi Ulnaris
| I:
I:
| Base of 5th metacarpal (Dorsal side)
31
Extensor Carpi Ulnaris
| N
```
N:
Radial nerve (Branch)
```
32
Extensor Carpi Ulnaris
| A
A:
Wrist extension
- Ulnar deviation of wrist
- Stabilizes wrist during finger extension (in concert with flexor carpi ulnaris
33
Flexor Carpi Ulnaris
| O
O:
| Medial epicondyle
34
Flexor Carpi Ulnaris
| I-1
I-1:
| Pisiform & Hamate
35
Flexor Carpi Ulnaris
| I-2
I-2:
| Base of 5th metacarpal (ventral side)
36
Flexor Carpi Ulnaris
| N
N:
| Ulnar nerve
37
Flexor Carpi Ulnaris
| A
A:
- Wrist flexion
- Ulnar deviation of wrist
- Stabilizes wrist during finger extension (in concert with extensor carpi ulnaris
38
Flexor Carpi Radialis
| O
O:
| Medial epicondyle
39
Flexor Carpi Radialis
| I
I:
| Base of 2nd and 3rd metacarpals
40
Flexor Carpi Radialis
| N
N:
| Median nerve
41
Flexor Carpi Radialis
| A
A:
- Wrist flexion
- Radial deviation of wrist
42
```
Biceps Brachii (short and long head)
O-1
```
O-1:
| Coracoid Process
43
```
Biceps Brachii (short and long head)
O-2
```
O-2:
| Supraglenoid tubercle via intertubercular groove (into joint capsule often joining the superior glenoid labrum)
44
```
Biceps Brachii (short and long head)
I
```
I:
| Radial tuberosity
45
```
Biceps Brachii (short and long head)
N
```
N:
| Musculocutaneous nerve
46
```
Biceps Brachii (short and long head)
A
```
A:
- Elbow flexion
- Forearm supination (if accompanies flexion)
47
```
Triceps Brachii (Long and Lateral Heads)
O-1
```
O-1:
| Infraglenoid tubercle of scapula
48
```
Triceps Brachii (Long and Lateral Heads)
O-2
```
O-2:
| Posterior shaft of humerus
49
```
Triceps Brachii (Long and Lateral Heads)
I
```
I:
| Olecranon process
50
```
Triceps Brachii (Long and Lateral Heads)
N
```
N:
| Radial Nerve
51
```
Triceps Brachii (Long and Lateral Heads)
A
```
```
A:
Elbow extension (prime mover)
```
52
Deltoid
| O
Same as trapezius insertions, on inferior side of structures
53
Deltoid
| O-1
O-1
| Acromion
54
Deltoid
| O-2
O-2
| Scapular spine
55
Deltoid
| O-3
O-3
| Lateral clavicle
56
Deltoid
| I
I:
| Deltoid tuberosity
57
Deltoid
| N
N:
| Axillary nerve
58
Deltoid
| A
A:
- Shoulder abduction (prime mover)
- Shoulder flexion + internal rotation (anterior fibers)
- Shoulder extension + external rotation (posterior fibers)
59
Rectus Abdominis
| O-1
O-1
| Pubic crest
60
Rectus Abdominis
| O-2
O-2
| Pubic symphysis
61
Rectus Abdominis
| I-1
I-1
| Xiphoid Process
62
Rectus Abdominis
| I-2
I-2
| Costal cartilage of ribs 5-7
63
Rectus Abdominis
| N
N
| Intercostal Nerves
64
Rectus Abdominis
| A
A:
- Flexes & rotates trunk
- Stabilizes pelvis while walking
- Increases intra-abdominal pressure
65
Pectoralis Major
| O-1
O-1
| Medial clavicle
66
Pectoralis Major
| O-2
O-2
| Sternal border and costal cartilage 1-6
67
Pectoralis Major
| I
I:
| Intertubercular groove of humerus
68
Pectoralis Major
| N
N:
| Pectoral Nerve
69
Pectoralis Major
| A
A:
- Shoulder flexion (prime mover)
- Shoulder internal rotation
- Shoulder adduction
- Can lift rib cage (scapula & arm fixed)
70
Trapezius
| O-1
O-1
| Occipital bone
71
Trapezius
| O-2
O-2
| Spinous Processes C7 & T1-T12
72
Trapezius
| I-1
I-1
| Acromion
73
Trapezius
| I-2
I-2
| Scapular Spine
74
Trapezius
| I-3
I-3
| Lateral Clavicle
75
Trapezius
| N:
N
| Accessory Nerve
76
Trapezius
| A
```
A:
Stabilizes scapula in 3 planes +
- Elevates (upper) = shrugging
- Retracts (middle)
- Depresses (lower)
```
77
Sternocleidomastoid
| O-1
O-1
| Manubrium of Sternum
78
Sternocleidomastoid
| O-2
O-2
| Medial Clavicle
79
Sternocleidomastoid
| I
I
| Mastoid Process
80
Sternocleidomastoid
| N:
```
N:
Accessory nerve (XI)
```
81
Sternocleidomastoid
| A
A:
- Flexes neck (against gravity)
- Rotates head to opposite side
- Side-bends head to same side
82
Masseter
| O
O
| Zygomatic Arch
83
Masseter
| I
I
| Mandibular Angle & Ramus
84
Masseter
| N
```
N:
Trigeminal Nerve (V)
```
85
Occipitalis (occipital belly)
| O
O:
| Occipital & Temporal Bones
86
Occipitalis (occipital belly)
| I
I:
| Epicranial aponeurosis
87
Occipitalis (occipital belly)
| N
```
N:
Facial Nerve (VII)
```
88
Occipitalis (occipital belly)
A:
| Fixes aponeurosis
89
Frontalis (frontal belly)
| O
O:
| Epicranial aponeurosis
90
Frontalis (frontal belly)
| I
I:
| Skin above eyes & nose
91
Frontalis (frontal belly)
| N:
```
N:
Facial nerve (VII)
```
92
Frontalis (frontal belly)
| A:
A:
| Raises eyebrow when aponeurosis is 'fixed.'
93
Epicranius=
Occipitofrontalis
