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241 A&P > Origins and Insertions > Flashcards

Origins and Insertions Flashcards

1
Q

Gastrocnemius O

A

O:

Medial and Lateral Condyles of femur (Posterior)

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2
Q

Gastrocnemius I

A

I:

Calcaneus via Achilles Tendon

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3
Q

Gastrocnemius N

A

N:

Tibial Nerve

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4
Q

Gastrocnemius A

A

A:

  • Ankle plantarflexion when knee is extended
  • Assists with knee flexion when ankle is dorsiflexed
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5
Q

Tibialis Anterior

O-1

A

O-1:

Lateral condyle of tibia

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6
Q

Tibialis Anterior

O-2

A

O-2:

Upper 2/3 tibial shaft

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7
Q

Tibialis Anterior

I-1

A

I-1:

Inferior surface medial cuneiform

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8
Q

Tibialis Anterior

I-2

A

I-2:

Inferior surface 1st metatarsal

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9
Q

Tibialis Anterior

N

A

N:

Peroneal Nerve

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10
Q

Tibialis Anterior

A

A 
A: 
Ankle dorsiflexion (prime mover)
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11
Q

Semimembranosus

O

A

O:

Ischial tuberosity

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12
Q

Semimembranosus

I

A

I:

Medial condyle of tibia

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13
Q

Semimembranosus

N

A

N:

Sciatic Nerve

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14
Q

Semimembranosus

A

A

A:

  • Hip extension
  • Knee flexion
  • Hip internal rotation
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15
Q 
Biceps Femoris (long head)
O-1
A

O-1:

Ischial tuberosity

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16
Q 
Biceps Femoris (long head)
O-2
A

O-2:

Linear Aspera

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17
Q 
Biceps Femoris (long head)
I-1
A

I-1:

Head of fibula

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18
Q 
Biceps Femoris (long head)
I-2
A

I-2:

Lateral condyle of tibia

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19
Q 
Biceps Femoris (long head)
N:
A

N:

Sciatic nerve

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20
Q 
Biceps Femoris (long head)
A:
A

A:

  • Hip extension
  • Knee flexion
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21
Q

Adductor Longus

O

A

O:

Anterior pubis

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22
Q

Adductor Longus

I

A

I:

Linear Aspera

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23
Q

Adductor Longus

N

A

N:

Obturator Nerve

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24
Q

Adductor Longus

A

A

A:

  • Hip adduction
  • Hip internal rotation
  • Hip flexion
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25
Q

Rectus femoris

O

A

O:

Anterior inferior iliac spine and superior margin of acetabulum

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26
Q

Rectus femoris

I

A

I:

Patella and Tibial Tuberosity (via patellar tendon)

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27
Q

Rectus femoris

N

A

N:

Femoral Nerve

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28
Q

Rectus femoris

A:

A

A:

Knee extension + assists with hip flexion

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29
Q

Extensor Carpi Ulnaris

O

A

O:

Lateral epicondyle

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30
Q

Extensor Carpi Ulnaris

I:

A

I:

Base of 5th metacarpal (Dorsal side)

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31
Q

Extensor Carpi Ulnaris

N

A 
N:
Radial nerve (Branch)
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32
Q

Extensor Carpi Ulnaris

A

A

A:
Wrist extension
- Ulnar deviation of wrist
- Stabilizes wrist during finger extension (in concert with flexor carpi ulnaris

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33
Q

Flexor Carpi Ulnaris

O

A

O:

Medial epicondyle

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34
Q

Flexor Carpi Ulnaris

I-1

A

I-1:

Pisiform & Hamate

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35
Q

Flexor Carpi Ulnaris

I-2

A

I-2:

Base of 5th metacarpal (ventral side)

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36
Q

Flexor Carpi Ulnaris

N

A

N:

Ulnar nerve

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37
Q

Flexor Carpi Ulnaris

A

A

A:

  • Wrist flexion
  • Ulnar deviation of wrist
  • Stabilizes wrist during finger extension (in concert with extensor carpi ulnaris
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38
Q

Flexor Carpi Radialis

O

A

O:

Medial epicondyle

39
Q

Flexor Carpi Radialis

I

A

I:

Base of 2nd and 3rd metacarpals

40
Q

Flexor Carpi Radialis

N

A

N:

Median nerve

41
Q

Flexor Carpi Radialis

A

A

A:

  • Wrist flexion
  • Radial deviation of wrist
42
Q 
Biceps Brachii (short and long head)
O-1
A

O-1:

Coracoid Process

43
Q 
Biceps Brachii (short and long head)
O-2
A

O-2:

Supraglenoid tubercle via intertubercular groove (into joint capsule often joining the superior glenoid labrum)

44
Q 
Biceps Brachii (short and long head)
I
A

I:

Radial tuberosity

45
Q 
Biceps Brachii (short and long head)
N
A

N:

Musculocutaneous nerve

46
Q 
Biceps Brachii (short and long head)
A
A

A:

  • Elbow flexion
  • Forearm supination (if accompanies flexion)
47
Q 
Triceps Brachii (Long and Lateral Heads)
O-1
A

O-1:

Infraglenoid tubercle of scapula

48
Q 
Triceps Brachii (Long and Lateral Heads)
O-2
A

O-2:

Posterior shaft of humerus

49
Q 
Triceps Brachii (Long and Lateral Heads)
I
A

I:

Olecranon process

50
Q 
Triceps Brachii (Long and Lateral Heads)
N
A

N:

Radial Nerve

51
Q 
Triceps Brachii (Long and Lateral Heads)
A
A 
A:
Elbow extension (prime mover)
52
Q

Deltoid

O

A

Same as trapezius insertions, on inferior side of structures

53
Q

Deltoid

O-1

A

O-1

Acromion

54
Q

Deltoid

O-2

A

O-2

Scapular spine

55
Q

Deltoid

O-3

A

O-3

Lateral clavicle

56
Q

Deltoid

I

A

I:

Deltoid tuberosity

57
Q

Deltoid

N

A

N:

Axillary nerve

58
Q

Deltoid

A

A

A:

  • Shoulder abduction (prime mover)
  • Shoulder flexion + internal rotation (anterior fibers)
  • Shoulder extension + external rotation (posterior fibers)
59
Q

Rectus Abdominis

O-1

A

O-1

Pubic crest

60
Q

Rectus Abdominis

O-2

A

O-2

Pubic symphysis

61
Q

Rectus Abdominis

I-1

A

I-1

Xiphoid Process

62
Q

Rectus Abdominis

I-2

A

I-2

Costal cartilage of ribs 5-7

63
Q

Rectus Abdominis

N

A

N

Intercostal Nerves

64
Q

Rectus Abdominis

A

A

A:

  • Flexes & rotates trunk
  • Stabilizes pelvis while walking
  • Increases intra-abdominal pressure
65
Q

Pectoralis Major

O-1

A

O-1

Medial clavicle

66
Q

Pectoralis Major

O-2

A

O-2

Sternal border and costal cartilage 1-6

67
Q

Pectoralis Major

I

A

I:

Intertubercular groove of humerus

68
Q

Pectoralis Major

N

A

N:

Pectoral Nerve

69
Q

Pectoralis Major

A

A

A:

  • Shoulder flexion (prime mover)
  • Shoulder internal rotation
  • Shoulder adduction
  • Can lift rib cage (scapula & arm fixed)
70
Q

Trapezius

O-1

A

O-1

Occipital bone

71
Q

Trapezius

O-2

A

O-2

Spinous Processes C7 & T1-T12

72
Q

Trapezius

I-1

A

I-1

Acromion

73
Q

Trapezius

I-2

A

I-2

Scapular Spine

74
Q

Trapezius

I-3

A

I-3

Lateral Clavicle

75
Q

Trapezius

N:

A

N

Accessory Nerve

76
Q

Trapezius

A

A 
A:
Stabilizes scapula in 3 planes +
- Elevates (upper) = shrugging
- Retracts (middle)
- Depresses (lower)
77
Q

Sternocleidomastoid

O-1

A

O-1

Manubrium of Sternum

78
Q

Sternocleidomastoid

O-2

A

O-2

Medial Clavicle

79
Q

Sternocleidomastoid

I

A

I

Mastoid Process

80
Q

Sternocleidomastoid

N:

A 
N:
Accessory nerve (XI)
81
Q

Sternocleidomastoid

A

A

A:

  • Flexes neck (against gravity)
  • Rotates head to opposite side
  • Side-bends head to same side
82
Q

Masseter

O

A

O

Zygomatic Arch

83
Q

Masseter

I

A

I

Mandibular Angle & Ramus

84
Q

Masseter

N

A 
N:
Trigeminal Nerve (V)
85
Q

Occipitalis (occipital belly)

O

A

O:

Occipital & Temporal Bones

86
Q

Occipitalis (occipital belly)

I

A

I:

Epicranial aponeurosis

87
Q

Occipitalis (occipital belly)

N

A 
N:
Facial Nerve (VII)
88
Q

Occipitalis (occipital belly)

A

A:

Fixes aponeurosis

89
Q

Frontalis (frontal belly)

O

A

O:

Epicranial aponeurosis

90
Q

Frontalis (frontal belly)

I

A

I:

Skin above eyes & nose

91
Q

Frontalis (frontal belly)

N:

A 
N:
Facial nerve (VII)
92
Q

Frontalis (frontal belly)

A:

A

A:

Raises eyebrow when aponeurosis is ‘fixed.’

93
Q

Epicranius=

A

Occipitofrontalis

241 A&P (19 decks)

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