Snuff Box
The floor of the anatomical snuff box
scaphoid and trapezium
Which bony landmark is associated with the common extensor origin?
lateral epicondyle
Which statements concerning the ulnar nerve are correct? Select all that apply.
a) It supplies the medial part of the flexor digitorum profundus.
b) It is derived from the medial cord of the brachial plexus.
c) It enters the hand by passing through the carpal tunnel.
d) It courses around the medial epicondyle.
e) It supplies the flexor carpi ulnaris.
a,b,d,e
Compression of the median nerve in the carpal tunnel produces: a) anaesthesia over the thenar eminence b) wasting of the hypothenar eminence c) loss of power of opposition of the thumb d) anaesthesia of the little finger e) loss of power of flexion of the thumb
c) loss of power of opposition of the thumb
The antebrachial fascia turns into the ____________ inferiorly
palmar aponeurosis
The medial border is ___________
extensor pollicis longus
Extensor pollicis longus muscle: a) arises from the radius b) extends the metacarpophalangeal joint of the thumb c) is supplied by the arterial interosseous nerve d) hooks around the dorsal tubercle of the radius (Lister’s tubercle) e) arises proximal to the abductor pollicis longus
d) hooks around the dorsal tubercle of the radius (Lister’s tubercle)
Which nerve is associated with the extensor compartment in the forearm?
Radial nerve
Includes the flexor tendons of all of these except:
flexor digitorom proundus, flexor digitorom superficialis, flexor pollicis longus, flexor carpus ulnaris
flexor carpus ulnaris
The thenar eminence is primarily responsible for the ________
opposition of the thumb
It contains the __________
radial artery, branch of the radial nerve and cephalic vein
Muscle that is involved in returning the forearm to a mid-prone position
Brachioradialis
Which nerve supplies the adductor pollicis and the hypothenar muscles?
Deep branch of the ulnar nerve
At the carpal tunnel: a) the flexor tendon synovial sheath is incomplete on the ulnar side b) the superficial tendons lie in the same plane c) the four profundus tendons have not yet separated d) the median nerve lies lateral to flexor digitorum superficialis e) median nerve compression causes anaesthesia over the thenar eminence
d) the median nerve lies lateral to flexor digitorum superficialis
Which muscle within the forearm is connected to the palmar aponeurosis?
Palmaris longus
Structures in the anatomical snuff box include all the following EXCEPT: a) the radial tubercle b) the scaphoid c) the base of the thumb metacarpal d) the trapezium e) the radial artery
a) the radial tubercle
Which of the following muscles DOES NOT arise from the common extensor origin? a) extensor carpi radialis brevis b) extensor digitorum comminus c) extensor carpi radialis longus d) extensor digiti minimi e) extensor carpi ulnaris
c) extensor carpi radialis longus
The radial nerve descends in the arm between the brachialis and _________ and crosses the anterior aspect of the _________ epicondyle. It enters the forearm and it divides into superficial and deep branches.
brachioradialis, lateral
Which of the following structures IS NOT one of the contents of the carpal tunnel? a) flexor digitorum superficialis b) ulnar artery c) flexor digitorum profundus d) median nerve e) flexor pollicis longus
b) ulnar artery
The thenar eminence is on the _________ aspect of the palm. Which muscles does it contain?
lateral, abductor pollicis brevis, flexor pollicis brevis, opponens pollicis
It ends by completing the deep palmar arch in conjunction with the _________
Ulnar artery
The order of tendons in the extensor compartment of the distal forearm from radial to ulnar sides is: ED = extensor digitorum ECRB = extensor carpi radialis brevis FCU = flexor carpi ulnaris EI = extensor indicis ECRL = extensor carpi radialis longus ECU = extensor carpi ulnaris EPL = extensor pollicis longus
a) ECRB; ECRL; EPL; ED; FCU; ECU; EI
b) ECRB; ECRL; EPL; ED; ECU; FCU; EI
c) ECRL; ECRB; EPL; ED; ECU; EI; FCU
d) ECRL; ECRB; EPL; ED & EI; ECU; FCU
e) ECRB; ECRL; EPL; ECU; FCU; ED & EI
d) ECRL; ECRB; EPL; ED & EI; ECU; FCU
The deep branch pierces the supinator muscle and supplies the posterior compartment of the forearm either directly or via its branch___________
the posterior interosseous nerve
In the carpal tunnel: a) the individual tendons arising from flexor digitorum profundus are all fused, and do not separate until they reach the palm b) the synovial sheath of flexor digitorum superficialis arises from the ulna bursa, but the sheath of profundus does not c) the tendon for the index finger from flexor digitorum superficialis lies medial to the median nerve d) flexor carpi radialis and flexor pollicis longus tendons share a synovial sheath e) the tendon of flexor digitorum superficialis to the middle finger lies deep to the tendons to the little finger
c) the tendon for the index finger from flexor digitorum superficialis lies medial to the median nerve
Which nerve supplies the muscles of the thenar eminence?
Recurrent branch of the median nerve