Muscle anatomy II

Question 1

jaw movements

Answer 1

protraction: lateral pterygoid muscles
retraction: horizontal fibres of temporalis muscles

Question 2

glenohumeral joint movement

Answer 2

abduction: supraspinatus muscle, middle fibres of deltoid muscle
adduction: latissimus dorsi muscle
flexion: anterior fibres of deltoid muscle
extension: latissimus dorsi muscle, posterior fibres of deltoid muscle

Question 3

spine movement

Answer 3

flexion: rectus abdominus muscle
extension: erector spinae group

Question 4

shoulder movement

Answer 4

elevation: superior fibres of trapezius muscle
depression: inferior fibres of trapezius muscle

Question 5

elbow joint movement

Answer 5

flexion: biceps brachii muscle, bracialis muscle
extension: triceps brachii muscle

Question 6

radioulnar joint movement

Answer 6

pronation: pronator teres muscle
supination: supinator muscle

Question 7

wrist movement

Answer 7

flexion: flexor carpi ulnaris/radialis muscle
extension: extensor carpi ulnaris/radialis muscle

Question 8

finger movement

Answer 8

flexion: flexor digitorium superficialis muscle
extension: extensor digitorium

Question 9

thumb movement

Answer 9

flexion: flexor pollicis longus
extension: extensor pollicis longus
palmar abduction: abductor pollicis brevis
palmar adduction: adductor pollicis
many muscles are from the thenar eminence

Question 10

hip joint movement

Answer 10

flexion: illiopsoas muscles
extension: gluteus maximus muscle
abduction: gluteus medius muscle
adduction: hip adductor muscles

Question 11

knee joint movement

Answer 11

flexion: hamstrings
extension: quadriceps femoris muscle

Question 12

Talocrucal joint

Answer 12

dorsiflexion: extensor digitorium longus muscle
plantar flexion: triceps surae muscles

Question 13

subtalar joint movement

Answer 13

inversion: tibialis anterior muscle
eversion: fibularis longus muscle