OTD Anatomy Test 1 UPDATED Questions and CORRECT Answers

OTD Anatomy Test 1 UPDATED Questions
and CORRECT Answers
extensor retinaculum - CORRECT ANSWER - holds tendons of extensor muscles in place



Muscles of posterior antebrachial compartment (lateral to medial) - CORRECT ANSWER -
abductor pollicis longus (APL)
extensor pollicis brevis (EPB)
extensor carpi radialis longus (ECRL)
extensor carpi radialis brevis (ECRB)
extensor pollicis longus (EPL)
extensor indicis (EI)
extensor digitorum (ED)
extensor digiti minimi (EDM)
extensor carpi ulnaris (ECU)


Outcropping extensors - CORRECT ANSWER - to thumb:
- abductor pollicis longus
- extensor pollicis brevis
- extensor pollicis longus
- extensor indicis


Posterior compartment function - CORRECT ANSWER - wrist/hand extensors, supination



Primary innervation of posterior compartment - CORRECT ANSWER - branches of radial N
(deep & superficial)

, Posterior compartment (superficial muscles) common site of attachment - CORRECT
ANSWER - lateral epicondyle of humerus



pathway of the radial N - CORRECT ANSWER - deep radial wraps posteriorly > posterior
interosseous after supinator


pathway of the ulnar nerve - CORRECT ANSWER - runs posterior to lateral epicondyle, runs
anterior afterwards


Superficial posterior antebrachium muscles (superior to inferior) - CORRECT ANSWER -
brachioradials
ECRL
ECRB
ED
EDM
ECU


Brachioradialis OIA - CORRECT ANSWER - O - proximal 2/3 of lateral supracondylar ridge
I - distal radius, proximal to styloid process
A - flex forearm when midprone, pronation, supination


Brachioradialis blood supply & innervation - CORRECT ANSWER - B - radial collateral A,
radial recurrent A, radial A
I - radial N


Extensor carpi radialis longus OIA - CORRECT ANSWER - O - lateral supracondylar ridge
I - dorsal aspect of base of 2nd metacarpal
A - extend, abduct hand @ wrist