Lab 6 Muscles That Move The Arm (origins + insertions)

Question 1

Pectoralis Major m.

Answer 1

Origin = clavicle, sternum, costal cartilages of true ribs
Insertion = lateral lip of intertubercular groove

Question 2

Coracobrachialis m.

Answer 2

Origin = coracoid process
Insertion = mid shaft of humerus

Question 3

Deltoid m.

Answer 3

Origin = clavicle, acromion + spine of scapula
Insertion = deltoid tuberosity

Question 4

Latissimus Dorsi m.

Answer 4

Origin = SP T7-12, Thoracolumbar fascia, iliac crest
Insertion = intertubercular groove

Question 5

Supraspinatus m.

Answer 5

Origin = supraspinous fossa
Insertion = greater tubercle

Question 6

Infraspinatus m.

Answer 6

Origin = infraspinous fossa
Insertion = greater tubercle

Question 7

Teres Minor m.

Answer 7

Origin = axillary border of scapula
Insertion = greater tubercle

Question 8

Subscapularis m.

Answer 8

Origin = subscapular fossa
Insertion = lesser tubercle

Question 9

Teres Major m.

Answer 9

Origin = inferior angle of scapula
Insertion = medial lip of intertubercular groove