Muscle Actions 2

Question 1

Retraction (adduction) of scapula

Answer 1

major - rhomboid major and minor

minor - trapezius (middle)

Question 2

Protraction (abduction) of scapula

Answer 2

major - serratus anterior

minor - pectoralis minor

Question 3

Elevation of scapula

Answer 3

major - levator scapulae

minor - rhomboid major and minor, trapezius (superior)

Question 4

Depression of scapula

Answer 4

major - pectoralis minor

minor - subclavius, trapezius (inferior)

Question 5

Superior rotation of scapula

Answer 5

trapezius (superior), serratus anterior

points glenoid fossa upward

Question 6

Inferior rotation of scapula

Answer 6

levator scapulae, rhomboid major and minor

points glenoid fossa down

Question 7

Abduction at glenohumeral joint

Answer 7

major - deltoid (middle)

minor - supraspinatus

Question 8

Adduction at glenohumeral joint

Answer 8

major - latissimus dorsi, pectoralis major

minor - coracobrachialis, teres major and minor, infraspinatus

Question 9

Extension at glenohumeral joint

Answer 9

major - latissimus dorsi, pectoralis major,

minor - teres major, long head of triceps

Question 10

Flexion at glenohumeral joint

Answer 10

major - pectoralis major, deltoid (anterior)

minor - coracobrachialis, long head of biceps brachii

Question 11

Lateral Rotation at glenohumeral joint

Answer 11

major - infraspinatus, teres minor

minor - deltoid (posterior)

Question 12

Medial Rotation at glenohumeral joint

Answer 12

major - subscapularis

minor - deltoid (anterior), latissimus dorsi, pectoralis major, teres major

Question 13

3 muscles that adduct and medially rotate shoulder

Answer 13

teres major, latissimus doors, pectoralis major

Question 14

Actions of the anterior compartment of brachium

Answer 14

coracobrachialis and biceps brachii long head - flex the shoulder/arm (glenohumeral joint)
biceps brachii and brachialis - flex the elbow joint/forearm
supinates the hand - biceps brachii

Question 15

Actions of the posterior compartment of brachium

Answer 15

extend the shoulder/arm and elbow/forearm joints

Question 16

Actions of the posterior compartment of forearm

Answer 16

extend wrist and digits

supination

Question 17

Actions of the anterior compartment of forearm

Answer 17

flex wrist and digits

pronation

Question 18

Flexion of elbow joint

Answer 18

brachialis, biceps brachii, brachioradialis

Question 19

Extension of elbow joint

Answer 19

triceps brachii, (anconeus)

Question 20

Supination of elbow joint

Answer 20

biceps brachii, supinator

Question 21

Pronation of elbow joint

Answer 21

pronator teres, pronator quadratus

Question 22

Abduction of the digits

Answer 22

abductor pollicis longus, intrinsic hand muscles

Question 23

Adduction of the digits

Answer 23

adductor pollicis, intrinsic hand muscles

Question 24

Flexion of the digits

Answer 24

flexor digitorum superficialis, flexor digitorum profundus, flexor pollicis longus, flexor pollicis brevis, flexor digiti minimi

Question 25

Extension of the digits

Answer 25

extensor digitorum, extensor pollicis longus, extensor pollicis brevis, extensor indicis, extensor digiti minimi, intrinsic hand muscles

Question 26

Medial flexion (adduction) of the digits

Answer 26

extensor carpi lunaris, flexor carpi ulnaris

Question 27

Lateral flexion (abduction) of the digits

Answer 27

extensor carpi radialis brevis and longus, flexor carpi radialis

Question 28

Flexion of the digits

Answer 28

flexor digitorum superficialis, flexor digitorum profundus, flexor carpi ulnaris, flexor carpi radialis, palmaris longus

Question 29

Extension of the digits

Answer 29

extensor carpi radialis brevis and longus, extensor carpi ulnaris

Question 30

Hip extension

Answer 30

gluteal and posterior compartment - gluteus maximus, hamstrings (biceps femoris, semimembranosus, semitendinosus), hamstring part of adductor magnus

Question 31

Hip flexion

Answer 31

iliopsoas and anterior compartment - iliopsoas muscle, (sartorius, rectus femoris, pectineus, TFL, adductors, gracilis)

Question 32

Hip abduction

Answer 32

lateral attachments | gluteal medius, gluteal minimus, TFL, (sartorius)

Question 33

Hip adduction

Answer 33

medial attachments adductor brevis, longus, magnus (medial compartment of the thigh) (pectineus, gracilis)

Question 34

Thigh abduction

Answer 34

tensor fasciae latae, sartorius, iliotibial tract, gluteus medius and minimus

Question 35

Thigh adduction

Answer 35

medial compartment adductor brevis, adductor longus, adductor magnus gracilis help from pectineus

Question 36

Hip medial rotation

Answer 36

anterior attachments gluteus medius and minimus tensor fasciae latae

Question 37

Hip lateral rotation

Answer 37

posterior attachments lateral rotators - piriformus, (superior and inferior gemellus, obturator internus, obturator externus, quadratus femoris) gluteus maximus (sartorius)

Question 38

Anterior compartment of leg actions

Answer 38

dorsiflexion of the ankle | extension of the digits

Question 39

Lateral compartment of leg actions

Answer 39

eversion of foot

Question 40

Posterior compartment of leg actions

Answer 40

plantar flexion of the ankle | flexion of the digits

Question 41

Flexion at the knee

Answer 41

hamstrings, sartorius, gracilis, gastrocnemius

Question 42

Extension at the knee

Answer 42

quadriceps femoris

Question 43

Medial rotation at the knee

Answer 43

sartorius, semimembranosus, semitendinosus, popliteus

Question 44

Lateral rotation at the knee

Answer 44

biceps femoris

Question 45

Dorsiflexion at the ankle

Answer 45

tibialis anterior, extensor digitorum longus, extensor hallucis longus

Question 46

Plantarflexion at the ankle

Answer 46

gastrocnemius, soleus, tibialis posterior, flexor digitorum longus, flexor hallucis longus

Question 47

Inversion at the ankle

Answer 47

tibialis anterior and posterior

Question 48

Eversion at the ankle

Answer 48

fibularis longus, fibularis brevis

Question 49

Abduction of the digits of foot

Answer 49

abductor hallucis, abductor digiti minimi, intrinsic foot muscles

Question 50

Adduction of the digits of foot

Answer 50

adductor hallucis, intrinsic foot muscles

Question 51

Flexion of the digits of foot

Answer 51

flexor digitorum longus, flexor hallucis longus, intrinsic foot muscles

Question 52

Extension of the digits of foot

Answer 52

extensor digitorum longus, extensor hallucis longus, intrinsic foot muscles