Anterior forearm

Question 1

the ______ nerve innervates all the muscles in the anterior compartment of the forearm except for the flexor carpi ulnaris and medial half of flexor digitorum profundus muscles

Answer 1

median

Question 2

list the muscles in the superficial layer of the anterior compartment of the forearm

Answer 2

• flexor carpi ulnaris
• palmaris longus
• flexor carpi radialis
• pronator teres

Question 3

origin of humeral head of flexor carpi ulnaris

Answer 3

medial epicondyle of humerus

Question 4

origin of ulnar head of flexor carpi ulnaris

Answer 4

olecranon and posterior border of ulna

Question 5

insertion of flexor carpi ulnaris

Answer 5

• pisiform bone
• via pisohamate and pisometacarpal ligaments into hamate and base of metacarpal 5

Question 6

innervation of flexor carpi ulnaris

Answer 6

ulnar nerve

Question 7

functions of flexor carpi ulnaris

Answer 7

• flexes wrist joint
• adducts wrist joint

Question 8

origin of palmaris longus

Answer 8

medial epicondyle of humerus

Question 9

insertion of palmaris longus

Answer 9

palmar aponeurosis

Question 10

innervation of palmaris longus

Answer 10

median nerve

Question 11

functions of palmaris longus

Answer 11

• flexes wrist joint
• resists shearing forces when gripping by contracting

Question 12

origin of flexor carpi radialis

Answer 12

medial epicondyle of humerus

Question 13

insertion of flexor carpi radialis

Answer 13

base of metacarpals 2 and 3

Question 14

innervation of fexor carpi radialis

Answer 14

median nerve

Question 15

functions of flexor carpi radialis

Answer 15

• flexes wrist joint
• abducts wrist joint

Question 16

origin of humeral head of pronator teres

Answer 16

• medial epicondyle of humerus
• adjacent supracondylar ridge

Question 17

insertion of pronator teres

Answer 17

roughening on lateral surface of radius

Question 18

innervation of pronator teres

Answer 18

median nerve

Question 19

function of pronator teres

Answer 19

pronation

Question 20

list muscles in the intermediate layer of the anterior compartment of the forearm

Answer 20

• flexor digitorum superficialis

Question 21

origin of humero-ulnar head of flexor digitorum superficial

Answer 21

• medial epicondyle of humerus
• adjacent margin of coronoid process

Question 22

origin of radial head of flexor digitorum superficialis

Answer 22

oblique line of radius

Question 23

insertion of flexor digitorum superficialis

Answer 23

palmar surfaces of middle phalanges of index, middle, ring and little fingers

Question 24

innervation of flexor digitorum superficialis

Answer 24

median nerve

Question 25

functions of flexor digitorum superficialis

Answer 25

• flexes proximal interphalangeal joints of index, middle, ring and little fingers
• can flex metacarpophalangeal joints of index, middle, ring and little fingers
• can flex wrist joint

Question 26

list muscles of the deep layer of anterior compartment of forearm

Answer 26

• flexor digitorum profundus
• flexor pollicis longus
• pronator quadratus

Question 27

where does the brachial artery divide into its 2 major branches?

Answer 27

apex of cubital fossa

Question 28

The 2 major branches of the brachial artery are the…

Answer 28

radial artery and ulnar artery

Question 29

name the branches of the radial artery

Answer 29

• radial recurrent artery
• palmar carpal branch
• superficial palmar branch

Question 30

in relation to the flexor carpi radialis muscle, the radial artery lies…

Answer 30

immediately lateral to the large tendon of flexor carpi radialis

Question 31

in relation to the pronator quadratus muscle, the radial artery lies…

Answer 31

directly anterior to it

Question 32

which areas does the radial recurrent artery supply?

Answer 32

• anastomotic network around elbow
• muscles on lateral side of forearm

Question 33

which areas does the palmar carpal branch of the radial artery supply?

Answer 33

carpal bones and joints

Question 34

name the branches of the ulnar artery

Answer 34

• ulnar recurrent artery
  1. anterior ulnar recurrent artery
  2. posterior ulnar recurrent artery
• common interosseous artery
  1. anterior interosseos artery
  2. posterior interosseous artery
• dorsal carpal branch
• palmar carpal branch

Question 35

which area does the ulnar recurrent artery supply?

Answer 35

anastomotic network around elbow joint

Question 36

name the branches of the median nerve

Answer 36

• anterior interosseous nerve
• palmar branch

Question 37

nerves found in the anterior compartment of the forearm are…

Answer 37

• median nerve
• ulnar nerve
• superficial branch of radial nerve

Question 38

which area does the palmar branch of the median nerve supply?

Answer 38

skin over the base and central palm

Question 39

which area does the anterior interosseous nerve supply?

Answer 39

muscles in the deep layer of anterior compartment of arm

Question 40

name the branches of the radial nerve

Answer 40

• deep radial nerve
• superficial radial nerve

Question 41

which area does the superficial radial nerve innervate?

Answer 41

skin on the posterolateral surface

Question 42

which area does the palmar branch of the ulnar nerve innervate?

Answer 42

skin on medial side of palm

Question 43

which area does the dorsal branch of the ulnar nerve innervate?

Answer 43

• skin on posteromedial side of the back of the hand
• most skin on posterior surfaces of medial 1 and 1/2 digits