Arms And Torso

Question 1

Trapezius

Answer 1

Superior - elevates scapula
Middle - adducts scapula
Inferior - depresses scapula

Question 2

Supinator

Answer 2

Supinates forearm

Question 3

Flexor carpi radialis

Answer 3

Flexes and abducts hand

Question 4

Flexor carpi ulnaris

Answer 4

Flexes and abducts hand

Question 5

Levator scapulae

Answer 5

Elevates, adducts scapula and slightly rotate it downward, laterally flexes neck to same side when scapula is fixed

Question 6

Pectoralis major

Answer 6

Adducts and medially rotates arm

Question 7

Brachioradialis

Answer 7

Flexes forearm (most effective when forearm is partially flexes and semi pronated)

Question 8

Deltoid

Answer 8

Adducts arms, anterior fibers alone flex and medially rotate arm, posterior fibers alone extend and laterally rotate arm

Question 9

Supraspinatus

Answer 9

Abducts arms, resists downward displacement of humerus when carrying heavy objects

Question 10

Latissimus dorsi

Answer 10

Extends, adducts and medially rotates arm, draws humerus downward as in hammering

Question 11

Flexor digitorum superficialis

Answer 11

Flexes hand and middle phalanges of digits II-V

Question 12

Pectoralis minor

Answer 12

W/ ribs fixed - draws scapula forward and downward (arm is stretched forward reaching for an object)
W/ scapula fixed - elevates ribs during inspiration

Question 13

Teres minor

Answer 13

Laterally rotates arm, helps to stabilize the shoulder joint

Question 14

Extensor carpi radialis longus

Answer 14

Extends and abducts hand

Question 15

Biceps brachii

Answer 15

Flexes and supinates forearm, weakly flexes arm

Question 16

Extensor carpi ulnaris

Answer 16

Extends and adducts the hand

Question 17

Subscapularis

Answer 17

Rotates arm medially, helps the stabilize the shoulder joint

Question 18

Infraspinatus

Answer 18

Laterally rotates arm, helps the stabilizer the shoulder joint

Question 19

Teres major

Answer 19

Extends, adducts and medially rotates arm

Question 20

Triceps brachii

Answer 20

Extends forearm, long head assists in addiction of arm

Question 21

Rhomboid major

Answer 21

Retracts ( adducts) scapula and slightly rotates it downward

Question 22

Pronater teres

Answer 22

Pronates forearm

Question 23

Extensor digitorum

Answer 23

Extends fingers and hand, abducts fingers

Question 24

Serratus anterior

Answer 24

Rotates scapula so inferior angle moves laterally and upwards ( stabilizer for actions of muscles that abduct arm foreword)