antebrachial muscles

Question 1

brachioradialis origin

Answer 1

Proximal 2/3 of
lateral
supracondylar ridge
of humerus

Question 2

brachioradialis insertion

Answer 2

lateral side of
distal end of
radius

Question 3

action of the brachioradialis

Answer 3

weak flexion of forearm
when forearm is
midpronated

Question 4

flexor carpi radialis origin

Answer 4

medial epicondyle of humerus

Question 5

flexor carpi radialis insertion

Answer 5

base of second metacarpal

Question 6

flexor carpi radialis action

Answer 6

flexes and abducts wrist at hand

Question 7

flexor digitorum superficialis origin

Answer 7

humero-ulnar
head:medial
epicondyle of
humerus and
coronoid process of
ulna radial
head:superior half
of anterior radius

Question 8

flexor digitorum superficialis insertion

Answer 8

bodies of
middle
phalanges of
medial 4 digits

Question 9

flexor digitorum superficialis action

Answer 9

flexes middle and
proximal phalanges of
medial four digits,
flexes hand at wrist

Question 10

flexor digitorum profundus origin

Answer 10

medial and anterior
surface of proximal
3/4 of ulna and
interosseus
membrane

Question 11

flexor digitorum profundus insertion

Answer 11

palmar base of
distal
phalanges of
medial four
digits

Question 12

flexor digitorum profundus action

Answer 12

flexes distal phalanges
of medial four digit,
assists with flexion of
hand at wrist

Question 13

flexor carpi ulnaris origin

Answer 13

humerial head:
medial epicondyle
of humerus ulnar
head:olecranon and
posterior border of
ulna

Question 14

flexor carpi ulnaris insertion

Answer 14

pisiform bone,
hook of
hamate, base
of 5th
metacarpal

Question 15

flexor carpi ulnaris action

Answer 15

Flexes and adducts

hand

Question 16

palmaris longus origin

Answer 16

medial epicondyle

of humerus

Question 17

palmaris longus insertion

Answer 17

distal half of
flexor
retinaculum
and palmar
aponeurosis

Question 18

palmaris longus action

Answer 18

flexes hand at wrist and
tenses palmar
aponeurosis

Question 19

Flexor Pollicis Longus origin

Answer 19

anterior surface of
radius and
interosseus
membrane

Question 20

Flexor Pollicis Longus insertion

Answer 20

palmar base of
distal phalanx
of thumb

Question 21

Flexor Pollicis Longus action

Answer 21

Flexes phalanges of

thumb

Question 22

pronator quadratus origin

Answer 22

distal fourth of

anterior ulna

Question 23

pronator quadratus insertino

Answer 23

distal fourth of

anterior radius

Question 24

pronator quadratus action

Answer 24

pronates forearm

Question 25

pronator teres origin

Answer 25

medial epicondyle
of humerus and
coronoid process of
ulna

Question 26

pronator teres insertion

Answer 26

midway along
lateral surface
of radius

Question 27

pronator teres action

Answer 27

pronates forearm and

assists in elbow flexion

Question 28

Anconeus origin

Answer 28

Posterior surface of
lateral epicondyle
of humerus

Question 29

Anconeus insertion

Answer 29

Lateral surface
of olecranon
and posterior
proximal ulna

Question 30

Anconeus action

Answer 30

assists triceps in
extension, abducts ulna
in pronation

Question 31

extensor carpi radialis brevis origin

Answer 31

lateral epicondyle

of humerus

Question 32

extensor carpi radialis brevis insertion

Answer 32

dorsal base of
3rd
metacarpalan
d slip to 2nd
metacarpal

Question 33

extensor carpi radialis brevis action

Answer 33

extends and abducts

hand at wrist

Question 34

extensor carpi radialis longus origin

Answer 34

distal third of lateral
supracondylar ridge
of humerus

Question 35

extensor carpi radialis longus insertion

Answer 35

dorsal base of
2nd
metacarpal
and slip to 3rd
metacarpal

Question 36

extensor carpi radialis longus action

Answer 36

extends and abducts

hand at wrist

Question 37

extensor digitorum origin

Answer 37

lateral epicondyle

of humerus

Question 38

extensor digitorum insertion

Answer 38

extensor
expansions of
the medial
four digits

Question 39

extensor digitorum action

Answer 39

extends medial four
digits and assists in
wrist extension

Question 40

extensor digiti minimi origin

Answer 40

lateral epicondyle

of humerus

Question 41

extensor digiti minimi insertion

Answer 41

extensor
expansion of
5th digit

Question 42

extensor digiti minimi action

Answer 42

extends 5th digit

Question 43

extensor indicis origin

Answer 43

posterior surface of
ulna and
interosseous
membrane

Question 44

extensor indicis insertion

Answer 44

extensor
expansion of
2nd digit

Question 45

extensor indicis action

Answer 45

extends 2nd digit and
helps extend hand at
wrist

Question 46

extensor carpi ulnaris origin

Answer 46

lateral epicondyle
of humerus and
posterior border of
ulna

Question 47

extensor carpi ulnaris insertion

Answer 47

dorsal base of
5th
metacarpal

Question 48

extensor carpi ulnaris action

Answer 48

extends and adducts

hand at wrist

Question 49

extensor pollicis brevis origin

Answer 49

posterior surface of
radius and
interosseous
membrane

Question 50

extensor pollicis brevis insertion

Answer 50

dorsal base of
proximal
phalanx of
thumb

Question 51

extensor pollicis brevis action

Answer 51

extends proximal
phalanx of thumb at
carpometacarpal joint

Question 52

extensor pollicis longus origin

Answer 52

posterior surface of
middle third of ulna,
interosseous
membrane

Question 53

extensor pollicis longus insertion

Answer 53

dorsal base of
distal phalanx
of thumb

Question 54

extensor pollicis longus action

Answer 54

extends distal phalanx
of thumb at
interphalangeal and
metacarpophalangeal
joints

Question 55

Abductor pollicis longus origin

Answer 55

posterior surface of
ulna, radius, and
interosseous
membrane

Question 56

Abductor pollicis longus insertion

Answer 56

base of 1st

metacarpal

Question 57

Abductor pollicis longus action

Answer 57

abducts and extend
thumb at
carpometacarpal joint

Question 58

supinator origin

Answer 58

lateral epicondyle
of humerus and
supinator crest of
ulna

Question 59

supinator insertion

Answer 59

lateral,
posterior, and
anterior
surfaces of
proximal third
of radius

Question 60

supinator action

Answer 60

supinates forearm