Biomechanics And Kinesiology - The Shoulder Complex Flashcards Preview

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Flashcards in Biomechanics And Kinesiology - The Shoulder Complex Deck (22):
1

Bones of shoulder complex

- clavicle
- scapula
- humerus

2

Joints of the shoulder complex

- glenohumeral joint
- acromioclavicle joint
- sternoclavicular joint
- scapulothoracic joint

3

Rotator cuff muscles

- supraspinatus
- infraspinatus
- teres minor
- subscapularis

4

Anterior deltoid

O - lateral end of clavicle

I - deltoid tuberosity

A - flexion of the arm at GH joint

5

Lateral deltoid

O - lateral acromion

I - deltoid tuberosity

A - abducts the arm at GH joint

6

Posterior deltoid

O - inferior aspect of spine of scapula

I - deltoid tuberosity

A - extension of the arm at GH joint

7

Supraspinatus

O - suprespinas fossa

I - superior facet of greater trochanter of humerus

A - abduction of the arm at GH joint

8

Infraspinatus

O - infraspinas fossa

I - medial facet of greater tubercle of humerus

A - external rotation

9

Teres minor

O - posterior lateral border of scapula

I - inferior facet of greater tubercle of humerus

A - external rotation and adduction of arm

10

Latissmus dorsi

O - medial sacral crest, posterior iliac crest, lower four ribs, spinous process/ supraspinous ligaments of lower half of the thoracic and all lumbar vertebrae

I - floor of intertubercle groove of humerus

A - depresses the scapulothoracic joint

11

Pectoralis major clavicular head

O - medial anterior aspect of the clavicle

I - crest of the greater tubercle of humerus

A - arm flexion

12

Pectoralis major sternocostal head

O - lateral margin of manubrium, anterior surface of sternum and upper six costal cartilages

I - crest of greater tubercle of humerus

A - adducts the arm and medially rotates the arm

13

Pectoralis minor

O - anterior surface of 3rd to 5th ribs

I - medial border of corocoid process

A - depresses and downward rotates the scapulothoracic joint

14

Subclavius

O - extreme anterior end of first rib

I - inferior lateral end of clavicle

A - depresses the scapulothoracic joint

15

Serratus anterior

O - external surfaces of lateral end of 1-8 or 9 ribs

I - entire medial border of scapula

A - protracts the scapulothoracic joint

16

Levator scapula

O - C1 through to C4

I - medial border superior to base of the spine of scapula

A - elevates the scapulothoracic joint

17

Rhomboid minor

O - C7 through to T1

I - medial border at the base of the spine of the scapula

A - elevates the scapulothoracic joint

18

Rhomboid major

O - T2 through to T5

I - medial border inferior to the base of the spine of the scapula

A - downward rotates the scapulothoracic joint

19

Anterior scalene

O - transverse process of C3 to C6

I - anterior surface of 1st rib

A - flexion of the neck

20

Middle scalene

O - transverse process of C2 to C7

I - anterior surface of 1st rib

A - elevates the first rib and lateral flexion

21

Posterior scalene

O - transverse process of C4 to C6

I - anterior surface of 2nd rib

A - elevates the 2nd rib and lateral flexion

22

Coracobrachialis

O - apex of coracoid process

I - medial aspect of middle shaft of humerus

A - elevates the arm through flexion