Forearm

Question 1

What are the two muscular compartments of the forearm?

Answer 1

1) anterior compartment (flexors)

2) posterior compartment (extensors)

Question 2

What are the two muscular compartments of the forearm divided by?

Answer 2

interosseous membrane

Question 3

What are the muscles of the anterior compartment of the forearm?

Answer 3

1) pronator teres
2) flexor carpi radialis
3) flexor digitorum superficialis
4) flexor digitorum profundus
5) flexor pollicis longus

Question 4

O: pronator teres

Answer 4

medial epicondyle of humerus

Question 5

I: pronator teres

Answer 5

shaft of radius

Question 6

F: pronator teres

Answer 6

prime mover for pronation of the forearm

Question 7

N: pronator teres

Answer 7

median nerve

Question 8

O: flexor carpi radialis

Answer 8

medial epicondyle of humerus

Question 9

I: flexor carpi radialis

Answer 9

second and third metacarpal bones

Question 10

F: flexor carpi radialis

Answer 10

flexor of the wrist, abduction of the wrist

Question 11

N: flexor carpi radialis

Answer 11

median nerve

Question 12

O: flexor digitorum superficialis

Answer 12

medial epicondyle of humerus

Question 13

I: flexor digitorum superficialis

Answer 13

tendons attach to middle phalanx of fingers 2 to 5

Question 14

F: flexor digitorum superficialis

Answer 14

flexion of the metacarpal phalanges (MCP joints) and proximal interphalangeal joints (PIP joints)

Question 15

N: flexor digitorum superficialis

Answer 15

median nerves

Question 16

O: flexor digitorum profundus

Answer 16

ulna

Question 17

I: flexor digitorum profundus

Answer 17

tendon attaches to distal phalanx of fingers 2 to 5

Question 18

F: flexor digitorum profundus

Answer 18

prime mover for flexion of wrist and flexion of all joints in the fingers

Question 19

N: flexor digitorum profundus

Answer 19

medial half: ulnar nerve

lateral half: median nerve

Question 20

O: flexor pollicis longus

Answer 20

radius

Question 21

I: flexor pollicis longus

Answer 21

tendon attaches to distal phalanx of the thumb

Question 22

F: flexor pollicis longus

Answer 22

prime mover for flexion of the thumb

Question 23

N: flexor pollicis longus

Answer 23

median nerve

Question 24

What is the primary nerve of the anterior compartment muscles of the forearm?

Answer 24

median nerve (some ulnar nerve)

Question 25

What is the flexor retinaculum and what is its function?

Answer 25

layer of dense connective tissue, holds the tendon of flexor muscles in place at the wrist and increases their efficiency

Question 26

What are the muscles of the anterior compartment of the forearm that are part of the superficial layer?

Answer 26

1) Pronator teres 2) Flexor carpi radialis 3) Flexor digitorum superficialis

Question 27

What are the muscles of the anterior compartment of the forearm that are part of the deep layer?

Answer 27

1) Flexor digitorum profundus | 2) Flexor pollicis longus

Question 28

What are the muscles of the posterior compartment of the forearm?

Answer 28

1) Brachioradialis 2) Extensor digitorum 3) Extensor carpi ulnaris 4) Supinator 5) Extensor indicis 6) Abductor pollicis longus

Question 29

What is the primary nerve of the posterior compartment muscles of the forearm?

Answer 29

radial nerve only

Question 30

O: Brachioradialis

Answer 30

lateral epicondyle of humerus

Question 31

I: Brachioradialis

Answer 31

styloid process of radius

Question 32

F: Brachioradialis

Answer 32

flexion of elbow

Question 33

N: Brachioradialis

Answer 33

radial nerve

Question 34

O: Extensor digitorum

Answer 34

lateral epicondyle of humerus

Question 35

I: Extensor digitorum

Answer 35

middle and distal phalanges of fingers 2 to 5

Question 36

F: Extensor digitorum

Answer 36

1) prime mover for extension of the fingers | 2) primer mover for extension of the wrist

Question 37

N: Extensor digitorum

Answer 37

radial nerve

Question 38

O: Extensor carpi ulnaris

Answer 38

lateral epicondyle of humerus

Question 39

I: Extensor carpi ulnaris

Answer 39

5th metacarpal bone

Question 40

F: Extensor carpi ulnaris

Answer 40

adduction of the wrist

Question 41

N: Extensor carpi ulnaris

Answer 41

radial nerve

Question 42

O: Supinator

Answer 42

ulna and humerus

Question 43

I: Supinator

Answer 43

radius

Question 44

F: Supinator

Answer 44

supination of the forearm

Question 45

N: Supinator

Answer 45

radial nerve

Question 46

O: Extensor indicis

Answer 46

ulna

Question 47

I: Extensor indicis

Answer 47

middle of index finger

Question 48

F: Extensor indicis

Answer 48

extension of index finger

Question 49

N: Extensor indicis

Answer 49

radial nerve

Question 50

O: Abductor pollicis longus

Answer 50

ulna

Question 51

I: Abductor pollicis longus

Answer 51

tendon to first metacarpal bone

Question 52

F: Abductor pollicis longus

Answer 52

prime mover for abduction of the thumb

Question 53

N: Abductor pollicis longus

Answer 53

radial nerve

Question 54

What are the muscles of the posterior compartment of the forearm that are part of the superficial layer?

Answer 54

1) Brachioradialis 2) Extensor digitorum 3) Extensor carpi ulnaris

Question 55

What are the muscles of the posterior compartment of the forearm that are part of the deep layer?

Answer 55

1) Supinator 2) Extensor indicis 3) Abductor pollicis longus

Question 56

Prime mover for pronation of forearm

Answer 56

Pronator teres

Question 57

Prime mover for flexion of wrist and flexion of all joints in the fingers

Answer 57

Flexor digitorum profundus

Question 58

Prime mover for flexion of the thumb

Answer 58

Flexor pollicis longus

Question 59

Prime mover for extension of the fingers

Answer 59

Extensor digitorum

Question 60

Primer mover for extension of the wrist

Answer 60

Extensor digitorum

Question 61

Prime mover for abduction of the thumb

Answer 61

Abductor pollicis longus