Muscles of the Pectoral Girdle, Arms and Back

Question 1

Biceps brachii (short head)*/

Answer 1

A: Flexion/supination of forearm
O: Scapula
I: Radial tuberosity of radius

Question 2

Biceps brachii (long head)*/

Answer 2

A: Flexion/supination of forearm
O: Scapula
I: Radial tuberosity of radius

Question 3

Coracobrachialis*

Answer 3

A: Flexion/adduction of arm
O: Coracoid process of scapula
I: Humerus

Question 4

Deltoid

Answer 4

A: Abduction of arm
O: Acromial end of clavicle and acromion and spine of scapula
I: Deltoid tuberosity of humerus

Question 5

Infraspinatus*/

Answer 5

A: lateral rotation of arm
O: infraspinous fossa of scapula
I: Greater tubercle of humerus

Question 6

Supraspinatus*/

Answer 6

A: Abduction of arm
O: Supraspinous fossa of scapula
I: Greater tubercle of humerus

Question 7

Latissmus dorsi/

Answer 7

A: Extension of arm, adduction of arm, medial rotation of arm