Shoulder Muscle Origin & Insertion Flashcards Preview

Muscle Origins, Insertions, Actions, Nerve supply, Arterial supply > Shoulder Muscle Origin & Insertion > Flashcards

Flashcards in Shoulder Muscle Origin & Insertion Deck (20):
1

Serratus anterior

Origin: Outer surface of 8-10th ribs, fascia of surrounding muscles
Insertion: Costal surface of medial border of scapula (superior to medial angle)

2

Levator scaplae

Origin: C1-C4 transverse process
Insertion: Medial border of scapula, between superior angle and root of spine

3

Upper Trapezius

Origin: Medial ⅓ of superior nuchal line, Ext. occipital protuberance, ligamentum nuchae
Insertion: Posterior border of lateral ⅓ of clavicle

4

Middle Trapezius

Origin: T1-T5 spinous process
Insertion: Medial border of acromion process, superior border of spine of the scapula

5

Lower Trapezius

Origin: T6-T12 spinous process
Insertion: Tupercle at medial end of spine of scapula

6

Rhomboid minor

Origin: Ligamentum nuchae, C7-T1 spinous process
Insertion: Base of triangular region at root of spine of scapula

7

Rhomboid major

Origin: T2-T5 spinous process
Insertion: Medial border of scapula between root of spine and inferior angle

8

Anterior deltoid

Origin: Anterior border of lateral ⅓ of clavicle
Insertion: Deltoid tuberosity on humerus

9

Middle deltoid

Origin: Lateral border and superior surface of acromion
Insertion: Deltoid tuberosity on humerus

10

Posterior deltoid

Origin: Inferior lip of spine of scapula
Insertion: Deltoid tuberosity

11

Supraspinatus

Origin: Medial ⅔ of supraspinatus fossa
Insertion: Superior facet of greater tuberosity

12

Coracobrachialis

Origin: Tip of coracoid process
Insertion: Middle of medial aspect of shaft of humerus

13

Pectoralis major (clavicular head)

Origin: Medial ⅓ of clavicle
Insertion: Lateral lip of intertubercular groove of humerus

14

Pectoralis major (sternal head)

Origin: Medial half of anterior surface of sternum
Insertion: Lateral lip of intertubercular groove of humerus

15

Pectoralis minor

Origin: Outer surface of 2-4 or 3-5 ribs near costal cartilage
Insertion: Coracoid process of the scapula

16

Subscapularis

Origin: Medial ⅔ of subscapularis fossa
Insertion: Lesser tuberosity of humerus, anterior aspect of joint capsule

17

Infraspinatus

Origin: Medial ⅔ of infraspinous fossa
Insertion: Middle facet of greater tuberosity

18

Teres minor

Origin: Upper ⅔ of lateral aspect of dorsal surface of scapula
Insertion: Inferior facet of greater tuberosity

19

Teres major

Origin: Posterior surface of inferior angle of scapula
Insertion: Medial lip of intertubercular groove of humerus

20

Latissimus dorsi

Origin: Lumbar and spinous process, posterior aspect of crest of ilium, spines of T7-T12, lower 3-4 ribs, inferior angle of scapula
Insertion: Floor of intertubercular groove of humerus