Posted by esb on September 28, 2011 at 15:17:45:
In Reply to: Re: Extensor Region of Forearm and Dorsum of Hand posted by MJ on September 28, 2011 at 01:07:49:
: : Extensor Region of Forearm and Dorsum of Hand: Learning Objectives and Review Questions
: : True/False
: : True/False - 2011
: : The extensor carpi radialis inserts on the base of the proximal phalanx of the second digit.
I think it doesn't make it that far out in the hand. My notes say the radial extensors insert on one of the second and third metacarpals.
: : The extensor carpi radialis longus is a more potent adductor of the wrist than is the extensor carpi radialis brevis.
One of Dr Evey's trick questions? Neither adduct...
: : The extensor carpi ulnaris receives the only muscular branch of the ulnar nerve in the forearm.
It receives innervation only from the deep radial nerve (Gray's says posterior interosseus) as far as I know. Flexor dig profundus and *flexor* carpi ulnaris both have ulnar nerve innervation (instead of the usual anterior interosseus from median nerve in the flexor compartment)
: : The abductor pollicis longus intervenes between the posterior interosseous membrane and the posterior interosseous nerve.
: F?
Netter's images look like it does.
: : The anterior interosseous nerve is directly applied to the interosseous membrane.
: F? Neurovascular Bundle with Ant. Interosseous Artery
In cross section, it looks like the only thing intervening between the nerve and the membrane would be a vascular sheath.