Function - Back, Thorax, & Upper Limb Muscles

Question 1

Teres Major

Answer 1

Adduct & medially rotate arm

Question 2

Extensor Carpi Radialis Brevis

Answer 2

Extension & abduction of the wrist

Question 3

Extensor Carpi Ulnaris

Answer 3

Extension & adduction of the wrist

Question 4

Infraspinatus

Answer 4

Laterally rotate arm

Question 5

Serratus Anterior

Answer 5

Protracts & holds scapula against body wall

Question 6

Pectoralis Minor

Answer 6

Depress & protract scapula

Question 7

Deltoid

Answer 7

Abducts arm 15-90 degrees; Flex and medially rotate arm; extend and laterally rotate arm

Question 8

Subscapularis

Answer 8

Medially rotate and adduct humerus

Question 9

Triceps

Answer 9

Extension of the forearm, resists dislocation of the humerus

Question 10

Palmar Interossei

Answer 10

Adduction of the fingers

Question 11

Extensor Digitorum

Answer 11

Extension of the fingers

Question 12

Pectoralis Major

Answer 12

Adduct & medailly rotate humerus; flexion of the humerus; extension of humerus while flexed (sit-ups, bench press)

Question 13

Supinator

Answer 13

Supination of the forearm

Question 14

Lumbricals 3 & 4

Answer 14

Flexion of the metacarpophalangeal joint & extension of the interphalangeal joints

Question 15

Teres Minor

Answer 15

Laterally rotate arm

Question 16

Flexor Digiti Minimi

Answer 16

Flexion of the pinky

Question 17

Pronator Quadratus

Answer 17

Pronation of the forearm

Question 18

Abductor Digiti Minimi

Answer 18

Abduction of the pinky

Question 19

Extensor Pollicis Longus

Answer 19

Extension of the thumb

Question 20

Coracobrachialis

Answer 20

Flexion & adduction of the humerus, resists dislocation of the humerus

Question 21

Palmaris Longus

Answer 21

Flexion of the wrist

Question 22

Flexor Digitorum Profundus

Answer 22

Flexion of the fingers

Question 23

Flexor Digitorum Superficialis

Answer 23

Flexion of the fngers

Question 24

Brachialis

Answer 24

Flexion of the forearm

Question 25

Supraspinatus

Answer 25

Initiates arm abduction 0-15 degrees

Question 26

Extensor Carpi Radialis Longus

Answer 26

Extension & abduction of the wrist

Question 27

Extensor Pollicis Brevis

Answer 27

Extension of the thumb

Question 28

Extensor Digiti Minimi

Answer 28

Extension of the pinky

Question 29

Extensor Indicis

Answer 29

Extension of the index finger

Question 30

Subclavius

Answer 30

Resist dislocation of the sternoclavicular joint & protect underlying neurovasculature

Question 31

Aconeous

Answer 31

Weak flexion of the forearm

Question 32

Flexor Pollicis Brevis

Answer 32

Flexion of the thumb

Question 33

Flexor Carpi Ulnaris

Answer 33

Flexion & adduction of the wrist

Question 34

Abductor Pollicis Longus

Answer 34

Abduction of the thumb

Question 35

Flexor Carpi Radialis

Answer 35

Flexion & abduction of the wrist

Question 36

Dorsal Interossei

Answer 36

Abduction of the fingers

Question 37

Adductor Pollicis

Answer 37

Adduction of the thumb

Question 38

Flexor Pollicis Longus

Answer 38

Flexion of the thumb

Question 39

Abductor Pollicis Brevis

Answer 39

Abduction of the thumb

Question 40

Opponens Pollicis

Answer 40

Opposition - bringing together thumb & pinky

Question 41

Biceps Brachialis

Answer 41

Flexion & supination of the forearm

Question 42

Lumbricals 1 & 2

Answer 42

Flexion of the metacarpophalangeal joint & extension of the interphalangeal joints

Question 43

Brachioradialis

Answer 43

Flexion of the forearm

Question 44

Pronator Teres

Answer 44

Pronation of the forearm