innervation
what nerve is the posterior interosseous nerve a branch of
radial nerve
what are the origins of abductor pollicis brevis, opponens pollicis, and flx. pollicis brevis?
the transverse carpal ligament, trapezium
what is the insertion of opponens pollicis
lateral side of MC 1
ext pollicis longus, brevis, and abductor pollicis longus are supplied by what artery
posterior interosseous artery
what is the action of opponens pollicis
opposition
what thumb muscle is innervated by the ulnar nerve
adductor pollicis
what is the origin of flx. pollicis longus
anterior radius and interosseous membrane
what is the insertion of ext. pollicis longus and brevis
longus- 1st distal phalanx
brevis- 1st proximal phalanx
what muscle is supplied by the anterior interosseous artery
flx. pollicis longus
what thumb muscles are innervated by the posterior interosseous nerve
ext. pollicis longus, ext. pollicis brevis, abductor pollicis longus
what is the origin of of ext. pollicis longus
posterior middle 1/3 ulna and interosseous membrane
what is the insertion of flx. pollicis longus and brevis
longus- 1st distal phalanx
brevis- 1st proximal phalanx
what muscles are supplied by the superficial palmar arch
flx pollicis brevis, abductor pollicis brevis, opponens pollicis
what thumb muscles insert at transverse carpal ligament
flx pollicis brevis, abductor pollicis brevis, opponens pollicis
what innervates opponens pollicis
median nerve
what is the origin of abductor pollicis longus
posterior midshaft radius and ulna, interosseous membrane
what is the insertion of abductor pollicis longus and brevis
longus- base mc 1
brevis- lateral base of 1st proximal phalanx
what supplies adductor pollicis
deep palmar arch
what bone does adductor pollicis insert at
capitate
what innervated flx. pollicis longus and brevis
longus- median nerve (anterior interosseous)
brevis- recurrent median nerve
what is the origin of adductor pollicis
base of MC 2-3, shaft MC 3, capitate
what is the insertion of adductor pollicis
medial side of 1st proximal phalanx
what artery does the superficial palmar arch come from
radial artery
what makes up the brevis sandwhich
ext. pollicis longus, ext. pollicis brevis, abductor pollicis longus