Upper Limb Anatomy-MCQ


01.Regarding pronator teres which of the following statements is correct?
a)      It forms the lateral border of the cubital fossa
b)      It arises from the coronoid process and lateral epicondyle.
c)      The Median nerve passes deep to both heads
d)     It’s medial border forms the medial boundary of the cubital fossa
e)      It is the most lateral of the superficial flexors of the forearm

02.Regarding the radial nerve which statement is incorrect?
a)      It passes anterior to the lateral epicondyle of the humerus
b)      Injury to the radial nerve from fracture of the shaft of the humerus will result in wrist drop
c)      Injury to the deep radial nerve in the mid forearm will prevent extension only at the MCPJs
d)     Sensory loss from injury to the superficial radial nerve will usually result in loss of sensation over the entire thumb
e)      It is the larger terminal branch of the posterior cord of the brachial plexus


03.Regarding the blood supply of the forearm
a)      The radial artery is the larger of the terminal branches of the brachial artery
b)      The radial artery runs under brachialis as it leaves the cubital fossa
c)      The radial artery has just one named branch proximal to the carpal braches
d)     Ligation of the radial artery at its origin will significantly reduce blood flow through the posterior interosseous artery.
e)      The radial artery has no involvement in the elbow anastomotic network



04The median nerve
a)      Supplies flexor carpi ulnaris and half of flexor digitorum profundis
b)      Gives rise to most of its braches in the upper arm
c)      Gives rise to the common interosseous nerve which divides anterior to the radial head
d)     May be compressed between the two heads of pronator teres
e)      Enters cubital fossa lateral to the brachial artery


Answers

1) E
2) D
3) C
4) D
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