ANATOMY
5
5.
Which is a branch of medial cord
a.
Medial pectoral nerve
T – C8, Ti
b.
Lateral pectoral nerve
F – lateral cord c5-c7
c.
Dorsal scapula
F – ventral ramus c5
d.
Axillary nerve
F – terminal branch posterior cord c5,6
e.
Lower subscapular
F – anterior branch of posterior cord P711 moores
6.
Which one of the following statements regarding the dorsal
scapular nerve (nerve to the rhomboids) is correct
Pg 695, 708 to 711 (good table 710)
a.
it is a branch of C6 from the cervical plexus
F - C5 ventral ramus with common contribution from C4
b.
it passes through scalenus medius
T
c.
it usually gives a branch to serratus anterior
F - no branches mentioned
d.
it does not supply levator scapulae
F - occasionally supplies levator scapulae
e.
it is at risk of injury as it runs superficial to the rhomboids F - enters deep surface of rhomboids
7.
something medial nerve injury affects
a.
all of arm flexors
8.
If the median nerve is injured at the level of the wrist, which
of these actions CANNOT be performed? Pg 739 Moore
a.
oppose thumb to little finger
T – as below
b.
flex tip of thumb
T - flexor Pollicus Longus supplied by ant interosseous nerve from median
anterior interosseous nerve supplies pronator quadratus, flexor pollicis
longus and FDP non-ulna portion. It is a branch of the MEDIAN n in th
distal part of the cubital fossa)
9.
Injury to wrist with impairment of Abduction of thumb,
what other lesion is probable p833NM
a.
Inability to flex DIP joint index finger
F - The innervation to FDP, FDS is Median nerve (ulna nerve to median part of
FDP) BUT it is ABOVE the wrist (and lumbricals 2,3,4 + interossei with still be
working from ulna n)
b.
Inability to flex DIP joint index finger
F
c.
Inability to oppose thumb to little finger
T - AbdPB and OP are both supplies by Median nerve
10.
Which of the following findings makes the diagnosis of
carpal tunnel syndrome UNLIKELY?
a.
wasted thenar muscles
F
b.
loss of sensation over the thenar eminence
T - Correct answer because palmar cutaneous branch comes off before the
carpal tunnel
11.
Regarding the radial nerve p710, 713, 714 p794NM
a.
it runs with profunda brachii in the radial groove
T - pg 83 Lasts
b.
it contains fibres from C 5,6,7,8 only
F - T1 as well) Moore 713
c.
it has no cutaneous branches in the upper arm
F – supplies skin of post aspect of arm-posterior cutaneous nerve of arm- and
forearm Moore 713
d.
it occupies the whole length of the radial groove
F – lies for most part behind medial head of triceps separating it from bone.
Only at lateral edge of humerus is nerve in contact with periosteum of lower end
of radial groove) pg 83 Lasts
e.
Runs with profunda brachii in the radial groove
T
f.
gives off the posterior interosseus in the spiral groove
F - No. comes off later
g.
contains only fibres of C 5,6,7
F - No gives C5-T1
h.
occupies the entire length of the radial groove
?
i.
passes through the quadrilangular space
F - No. I think it comes through triangular space
j.
it gives off the posterior interosseous nerve
in the radial groove
F - No. It gives off PIN at level of lateral epicondyle of the humerus
