Muscles That Move The Arm

Question 0

Pectoralis major

Answer 0

Origin: clavicle sternum and costal cartilages of upper ribs
Insertion: intertubercular groove of humerus

Action: pills arm anteriorly and across chest and rotates humerus or adducts arms

Question 1

Muscles that move the arm

Answer 1

Origin: caracoid process of scapula
Insertion: shade if humerous

Action: flexes and adducts arm

Question 2

Tres major

Answer 2

Origin: lateral border of scapula
Insertion: intertubercular groove of humerus

Action: extends humerus or adducts and roar area arm medially

Question 3

Latissimus dorsi

Answer 3

Origin: spines of sacral, lumbar, and lower thoracic vertebrae lilac crest and lower ribs

Action: extends and adducts arm and rotates humerus inwardly, or pills shoulder down and posteriorly

Question 4

Surpraspinatus

Answer 4

Origin: posterior surface of scapula
Insertion: greater tubercle of humerus

Action: abducts arm

Question 5

Deltoid

Answer 5

Origin: acromion process of spine of scapula and clavicle
Insertion: deltoid tuberosiry id humerus

Action: abducts arm extends or flexes humerus

Question 6

Subscapularis

Answer 6

Origin: anterior surface of scapula
Insertion: lesser tubercle of humerus

Action: rotates arm medially

Question 7

Infraspinatus

Answer 7

Origin: posterior surface of scapula
Insertion: greater tubercle of humerus

Action: rotates arm laterally

Question 8

Tres minor

Answer 8

Origin: lateral border of scapula
Insertion: greater tubercle of humerus

Action: rotates arm laterally