Lab Exam 1 (The shoulder, shoulder girdle, and scapula) Flashcards Preview

Applied Anatomy > Lab Exam 1 (The shoulder, shoulder girdle, and scapula) > Flashcards

Flashcards in Lab Exam 1 (The shoulder, shoulder girdle, and scapula) Deck (15)
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1

Sternocleidomastoid

Origin- clavicle and manubrium
Insertion- Mastoid process of the temporal bone
Action- flexes, laterally flexes, and rotates head to opposite side

2

Trapezius

Origin- occipital protuberance, C7-T12, spinous processes
Insertion- clavicle; acromion process and spine of the scapula
Action-
Upper: extends head or elevates shoulder girdle
Middle: retracts and stabilizes the scapula
Lower: depresses scapula and shoulder girdle

3

Levator Scapulae

Origin- C1-C4 transverse processes
Insertion- superior angle of the scapula
Action- elevates the scapula

4

Rhomboid Minor

Origin- C7-T1 spinous processes
Insertion- medial border of the scapula
Action- scapular retraction

5

Rhomboid Major

Origin- T2-T5 spinous processes
Insertion-medial border of the scapula
Action-scapular retraction

6

Pectoralis Minor

Origin- ribs 3-5
Insertion- coracoid process of the scapula
Action- depresses the scapula; elevates ribs 3-5

7

Serratus Anterior

Origin- ribs 1-8
Insertion- inferior angle and medial border of the scapula
Action- scapular protraction

8

Latissimus Dorsi

Origin- T7 spinous process through sacrum
Insertion- Intertubercular groove of humerus
Action- Adducts, extends and medially rotates the shoulder

9

Teres Major

Origin- Axillary(lateral) border of scapula
Insertion- Intertubercular groove of humerus
Action- extends shoulder

10

Pectoralis Major

Origin- Clavicle; sternum; true ribs
Insertion- Intertubercular groove of humerus
Action- shoulder medial rotation and adduction

11

Deltoid

Origin- clavicle; acromion process; spine of the scapula
Insertion- deltoid tuberosity of the humerus
Action- abducts the shoulder

12

Supraspinatus

Origin- Supraspinous fossa of scapula
Insertion- greater tubercle of humerus
Action- abducts shoulder

13

Infraspinatus

Origin- infraspinous fossa of scapula
Insertion- greater tubercle of humerus
Action- laterally rotates the shoulder

14

Teres Minor

Origin- lateral border of the scapula
Insertion- greater tubercle of the humerus
Action- laterally rotates the shoulder

15

Subscapularis

Origin- subscapular fossa of the scapula
Insertion- lesser tubercle of humerus
Action- medially rotates shoulder