Appendicular Muscles: Actions ONLY

Question 1

Pectoralis Minor

Answer 1

Depresses and pulls scapula anteriorly

Question 2

Serratus Anterior

Answer 2

Draws scapula forward along thoracic wall, rotates scapula.

Question 3

Trapezius

Answer 3

Elevates, depresses, rotates adducts scapula.

Question 4

Deltoid

Answer 4

Abducts; flexes and medially rotates; extends and laterally rotates arm.

Question 5

Latissimus Dorsi

Answer 5

Extends, adducts, and medially rotates arm.

Question 6

Pectoralis Major

Answer 6

Flexes shoulder, medially rotates, and adducts arm.

Question 7

Supraspinatus

Answer 7

Arm abduction

Question 8

Infraspinous

Answer 8

Laterally rotates arm

Question 9

Teres Major

Answer 9

Adducts extends and medially rotates the arm.

Question 10

Teres Minor

Answer 10

Laterally rotates arm

Question 11

Subcapularis

Answer 11

Medially rotates arm

Question 12

Biceps Brachii (long head and short head)

Answer 12

Flexes arm and forearm and supinates forearm.

Question 13

Brachialis

Answer 13

Flexes forearm

Question 14

Long head of Triceps Brachii

Answer 14

Extends arm and forearm extension.

Question 15

Medial and Lateral head of triceps brachii

Answer 15

Forearm extension

Question 16

Pronator Teres

Answer 16

Pronates arm

Question 17

Flexor carpi radialis

Answer 17

Flexes and abducts hand

Question 18

Palmaris Longus

Answer 18

Flexes hand (wrist)

Question 19

Flexor Carpi Ulnaris

Answer 19

Flexes and adducts hand (wrist)

Question 20

Flexor digitorum superficialis & flexor digitorum profundus

Answer 20

Flexes phalanges

Question 21

Brachioradialis

Answer 21

Flexes forearm (elbow)

Question 22

Extensor Carpi radialis longus & Extensor Carpi Radialis Brevis & Extensor Carpii Ulnaris

Answer 22

extends and abducts hand

Question 23

Extensor Digitorum

Answer 23

Extends fingers and hand

Question 24

Gluteus Maximus

Answer 24

Extends and laterally rotates hip

Question 25

Gluteus Medius

Answer 25

Abducts thigh at hip

Question 26

Biceps femoris
(short head)

Answer 26

Flexes and laterally rotates leg at knee

Question 27

Biceps femoris Long Head

Answer 27

Extends thigh at the hip

Question 28

Semitendinosus and Semimembranosus

Answer 28

Extends thigh at hip; flexes and medially rotates leg at knee.

Question 29

Gracilis

Answer 29

Adducts thigh at hip; flexes leg at knee.

Question 30

Adductor Longus and Adductor Magnus

Answer 30

Adduct and flexes thigh at hip

Question 31

Adductor Brevis

Answer 31

Adducts thigh at hip

Question 32

iliopsoas

Answer 32

flexes hip

Question 33

Sartorius

Answer 33

flexes hip and knee

Question 34

Quadriceps Femoris (all four muscles, rectus femoris, vastus laterlis, vastus medialis, vastus intermedius)

Answer 34

extend leg at knee

Question 35

Quadriceps femoris- rectus femoris only

Answer 35

Flexes thigh at hip

Question 36

Pectineus

Answer 36

Flexes, adducts thigh
and medially rotates thigh

Question 37

Tensor Fascia Latae

Answer 37

flexes and abducts thigh

Question 38

Tibialis Anterior

Answer 38

Dorsiflexes and inverts the foot; extends toe “digging in the heels”

Question 39

Extensor digitorum longus

Answer 39

dorsiflexes foot and extends toes.

Question 40

Fibularis (peroneus) longus and brevis

Answer 40

Plantar flexes and everts foot

Question 41

Gastrocnemius

Answer 41

Plantar flexes the foot “on tip toe”

Question 42

Soleus

Answer 42

Plantar flexes the foot and inverts foot

Question 43

Flexor Digitorum Longus

Answer 43

Plantar flexes and inverts floor; flexes toes