Posterior muscles O, I, & A

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59 Terms

1
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Trapezius origin

  • superior nuchal lines of occipital bone

  • thoracic spinous process

2
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trapezius insertion

  • clavical

  • acromoin of scapula

  • scapular spine

3
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trapezius action

scapula

  • elevation

  • depression

  • retraction

4
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Rhomboid major origin

spinous processes of T2-5

5
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Rhomboid major insertion

medial border of scapula

6
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Rhomboid major action

Sacpula

  • retraction

  • elevation

7
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Latissimus Dorsi origin

  • spinous process T7-L5

  • sacrum

  • ribs 8-12

  • thoracolumbar fascia

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latissimus dorsi insertion

intubercular groove of humerous

9
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latissimus dorsi action

shoulder

  • extension

  • adduction

  • internal rotation

10
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Supraspinatus origin

supraspinous fossa of scapula

11
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Supraspinatus insertion

greater tubercle of humerous

12
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Supraspinatus action

  • abducts arm

  • stabilizes shoulder

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Infraspinatus origin

infraspinous fossa of scapula

14
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Infraspinatus insertion

greater tubercle of humerous

15
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Infraspinatus action

  • external rotation of arm

  • shoulder stabalization

16
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Teres minor origin

lateral border of scapula

17
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Teres minor insertion

greater tubercle of humerous

18
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teres minor action

  • external rotation of the arm

  • shoulder stabilization

19
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subscapularis origin

subscapular fossa of scapula

20
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subscapularis insertion

lesser tubercle of humerus

21
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subscapularis action

  • internal rotation of arm

  • shoulder stabilization

22
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Triceps brachii long head origin

infraglenoid tubercle of scapula

23
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Triceps brachii lateral head origin

posterior humeral surface

24
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Triceps brachii medial head origin

posterior humeral surface

25
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Triceps brachii insertion

olecranon of ulna

26
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triceps brachii action

all three heads

  • elbow extension

Long head

  • shoulder extension/adduction

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Extensor carpi ulnaris origin

lateral epicondyle of humerous

28
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Extensor carpi ulnaris insertion

5th metacarpal

29
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Extensor carpi ulnaris action

wrist

  • extension

  • adduction

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Extensor carpi radialis longus origin

lateral epicondyle of humerous

31
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Extensor carpi radialis longus insertion

2nd metatcarpal

32
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Extensor carpi radialis longus action

wrist

  • extension

  • abduction

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extensor carpi radialis brevis origin

lateral epicondyle of humerous

34
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extensor carpi radialis brevis insertion

3rd metacarpal

35
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extensor carpi radialis brevis actions

wrist

  • extension

  • abduction

36
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Gluteus maximus origin

  • iliac crest

  • lateral surface of illium

  • sacrum

  • coccyx

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Gluteus maximus insertion

  • it tract

  • gluteal tuberosity of femur

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Gluteus maximus action

hip

  • extension

  • external rotation

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Gluteus medius origin

iliac crest

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Gluteus medius insertion

greater trochanter of femur

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Gluteus medius action

abducts hip

42
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Piriformis origin

S2-4

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Piriformis insertion

greater trochanter of femur

44
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piriformis action

external rotation of hip

45
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semimembranosus origin

ischial tuberosity

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semimembranosus insertion

medial condyle of tibia

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semimembranosus action

knee

  • flexion

Hip

  • extension

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semitendinosus origin

ischial tuberosity

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semitendinosus insertion

medial surface of tibia

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semitendinosus action

Knee

  • flexion

Hip

  • extension

51
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Bicep femoris origin

long head

  • ischial tuberosity

short head

  • Linea aspera of femur

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Bicep femoris insertion

head of fibula

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Bicep femoris action

knee

  • flexion

Hip

  • extension

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gastrocnemius origin

femoral condyles

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gastrocnemius insertion

calcaneous

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gastrocnemius action

knee

  • flexion

ankle

  • plantar flexion

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soleus origin

  • head of fibula

  • posterior tibia shaft

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soleus insertion

calcaneus

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soleus action

planter flexes ankle