Upper Limb 3 - Station 1

Question 1

3 layers of the anterior forearm muscles

Answer 1

superficial, middle/intermediate and deep

Question 2

superficial anterior forearm muscles

Answer 2

flexor carpi radialis, flexor carpi ulnaris, palmaris longus and pronator teres

Question 3

common origin of all superficial anterior forearm muscles

Answer 3

medial epicondyle

Question 4

action of pronator teres

Answer 4

pronation and flexion of wrist

Question 5

innervation of pronator teres

Answer 5

median nerve

Question 6

action of flexor carpi ulnaris

Answer 6

wrist flexion and adduction

Question 7

innervation of flexor carpi ulnaris

Answer 7

ulnar

Question 8

action of flexor carpi radialis

Answer 8

wrist flexion and abduction

Question 9

innervation of flexor carpi radialis

Answer 9

median

Question 10

action of palmaris longus

Answer 10

flexes wrist and tenses palmar aponeurosis

Question 11

innervation of palmaris longus

Answer 11

median

Question 12

which muscles tendon can be seen protuding in the wrist and is not present in 10% of the population

Answer 12

palmaris longus

Question 13

order that the superficial anterior forearm muscles go in from medial to lateral

Answer 13

flexor carpi ulnaris –> palmaris longus –> flexor carpi radialis –> pronator teres

Question 14

is the brachioradialis anterior or posterior forearm compartment

Answer 14

posterior

Question 15

action of brachioradialis

Answer 15

flexion of the elbow strongest in the midprone position

Question 16

innervation of brachioradialis

Answer 16

radial

Question 17

how is the brachioradialis an exception

Answer 17

because breaks the generalisation that the radial nerve supplies only extensors and that all flexors are in the anterior compartment

Question 18

intermediate muscles of the anterior forearm

Answer 18

flexor digitorum superficialis (FDS)

Question 19

how many tendons does the flexor digitorum superficialis have and where do they attach

Answer 19

4 attaching to the middle phalanges of the medial 4 fingers

Question 20

innervation of the flexor digitorum superficialis

Answer 20

median nerve

Question 21

deep muscles of the anterior forearm

Answer 21

flexor digitorum profundus, flexor pollicis longus and pronator quadratus

Question 22

all muscles of the anterior forearm (from out to in)

Answer 22

flexor carpi ulnaris
palmaris longus
flexor carpi radialis
pronator teres
flexor digitorum superficialis
flexor digitorum profundus
flexor pollicis longus
pronator quadratus

Question 23

action of the flexor digitorum profundus

Answer 23

flexes wrist and DIP joints of medial four fingers

Question 24

action of the flexor digitorum superficialis

Answer 24

flex wrist and PIP joints of medial four fingers

Question 25

which flexor digitorum is responsible for flexion at the distal interphalangeal joints

Answer 25

flexor digitorum profundus

Question 26

innervation of flexor digitorum profundus

Answer 26

medial half –> ulnar

lateral half –> median

Question 27

action of flexor pollicis longus

Answer 27

flexion of wrist and thumb IP joint

Question 28

innervation of flexor pollicis longus

Answer 28

median nerve (anterior interosseus nerve)

Question 29

action of pronator quadratus

Answer 29

pronate forearm

Question 30

innervation of pronator quadratus

Answer 30

median nerve (anterior interosseus nerve)

Question 31

which forearm muscles are innervated by the anterior interosseus branch of the median nerve

Answer 31

pronator quadratus, flexor pollicis longus and lateral part of the flexor digitorum profundus

Question 32

only two anterior forearm muscles not to be innervated by the median nerve

Answer 32

flexor carpi ulnaris and medial part of flexor digitorum profundus

Question 33

which forearm muscles has split innervation

Answer 33

flexor digitorum profundus