Muscle Actions

Question 1

Shoulder flexion

Answer 1

Biceps brachii, anterior deltoid, coracobrachialis, pectoralis major

Question 2

Shoulder extension

Answer 2

Posterior deltoid, teres major, latissimus dorsi

Question 3

Shoulder abduction

Answer 3

Middle deltoid, supraspinatus

Question 4

Shoulder adduction

Answer 4

Pectoralis major, latissimus dorsi, teres major

Question 5

Shoulder IR

Answer 5

Subscapularis, teres major, pectoralis major, latissimus dorsi, anterior deltoid

Question 6

Shoulder ER

Answer 6

Teres minor, infraspinatus, posterior deltoid

Question 7

Scapula elevation

Answer 7

Upper trapezius, levator scapulae

Question 8

Scapula depression

Answer 8

Lower trapezius, latissimus dorsi, pectoralis major/minor

Question 9

Scapula protraction

Answer 9

Serratus anterior, pectoralis minor

Question 10

Scapula retraction

Answer 10

Trapezius, rhomboids

Question 11

Scapula upward rotation

Answer 11

Trapezius, serratus anterior

Question 12

Scapula downward rotation

Answer 12

Rhomboids, levator scapulae, pectoralis minor

Question 13

Elbow flexion

Answer 13

Biceps brachii, brachialis, brachioradialis

Question 14

Elbow extension

Answer 14

Triceps brachii, anconeus

Question 15

Supination

Answer 15

Biceps brachii, supinator

Question 16

Pronation

Answer 16

Pronator teres, pronator quadratus

Question 17

Wrist flexion

Answer 17

Flexor carpi radialis, flexor carpi ulnaris, palmaris longus

Question 18

Wrist extension

Answer 18

Extensor carpi radialis longus, extensor carpi radialis brevis, extensor carpi ulnaris

Question 19

Radial deviation

Answer 19

Extensor carpir radialis, flexor carpi radialis, extensor pollicis longus and brevis

Question 20

Ulnar deviation

Answer 20

Extensor carpi ulnaris, flexor carpi ulnaris

Question 21

TMJ depression

Answer 21

Lateral pterygoid, suprahyoid, infrahyoid

Question 22

TMJ elevation

Answer 22

Temporalis, masseter, medial pterygoid

Question 23

TMJ protrusion

Answer 23

Masseter, lateral pterygoid, medial pterygoid

Question 24

TMJ retrusion

Answer 24

Temporalis, masseter, digastric

Question 25

TMJ lateral deviation

Answer 25

Medial pterygoid, lateral pterygoid, masseter, temporalis

Question 26

Cervical flexion

Answer 26

Sternocleidomastoid, longus colli, scalenus muscles

Question 27

Cervical extension

Answer 27

Splenius cervicus, semispinalis cervicis, iliocostalis cervicis, longissimus cervicis, multifidus, trapezius

Question 28

Cervical rotation/side bending

Answer 28

Sternocleidomastoid, scalenus muscles, splenius cervicis, longissimus cervicis, iliocostalis cervicis, levator scapulae, multifidus

Question 29

Thoracic/lumbar flexion

Answer 29

Rectus abdominus, internal oblique, external oblique

Question 30

Thoracic/lumbar extension

Answer 30

Erector spinae, quadratus lumborum, multifidus

Question 31

Thoracic/lumbar rotation/side bending

Answer 31

Psoas major, quadratus lumborum, external oblique, internal oblique, multifidus, longissimus thoracis, iliocostalis thoracis, rotatores

Question 32

Hip flexion

Answer 32

iliopsoas, rectus femoris, sartorius, pectineus

Question 33

Hip extension

Answer 33

gluteus maximus/medius, semitendinosus, semimembranosus, biceps femoris

Question 34

Hip abduction

Answer 34

Gluteus medius/minimus, piriformis, obturator internus

Question 35

Hip adduction

Answer 35

Adductor magnus, adductor longus, adductor brevis, gracilis

Question 36

Hip IR

Answer 36

Tensor facsia latae, gluteus medius/minimus, pectineus, adductor longus

Question 37

Hip ER

Answer 37

Gluteus maximus, obturator externus, obturator internus, piriformis, gemelli, sartorius

Question 38

Knee flexion

Answer 38

Biceps femoris, semitendinosus, semimembranosus, sartorius

Question 39

Knee extension

Answer 39

Rectus femoris, vastus lateralis/medialis/intermedius

Question 40

Plantar flexion

Answer 40

Tibialis posterior, gastrocnemius, soleus, peroneus longus, peroneus brevis, plantaris, flexor hallucis

Question 41

Dorsiflexion

Answer 41

Tibialis anterior, extensor hallucis longus, extensor digitorum longus, peroneus tertius

Question 42

Inversion

Answer 42

Tibialis posterior, tibialis anterior, flexor digitorum longus

Question 43

Eversion

Answer 43

Peroneus longus, brevis, tertius