Upper Limb 3 - Station 4 Flashcards
3 muscles which make up the thenar eminenece
abductor pollicis brevis, flexor pollicis brevis and opponens pollicis
4 thenar muscles
abductor pollicis brevis, flexor pollicis brevis, opponens pollicis and adductor pollicis
which intrinsic hand muscle has a transverse and an oblique head
adductor pollicis
which thenar muscles share innervation
median nerve
hand muscles innervated by the median nerve
thenar eminence trio and lumbricals
hand muscles innervated by the ulnar nerve
adductor pollicis, hypothenar and interossei
the 3 hypothenar muscles
abductor digiti minimi, flexor digiti minimi and opponense digiti minimi
where is the thenar eminence
bulky thumb muscle bit
where are the hypothenar muscles
on the pinky side of the palm - that big muscle bulk
nerve roots which mainly innervate the thenar eminence through the median nerve
C8 and T1
what nerve roots innervate all of the hand muscles
C8 and T1
which is the only set of hand muscles not to be mainly innervated by T1
the thenar eminence three
where is flexor digiti minimi
on the pinky side muscle bulk, part of hypothenar eminence
where is lumbrical number 2
middle finger
which lumbricals look like they have two bellies
lumbricals 3 and 4
where is lumbrical number 4
on the little finger
action of adductor pollicis on the thumb
adduction
lumbricals are on the dorsal/palmar side of the hand
palmar
how many interossei are on the dorsal surface
4
how many interossei are on the palmar side
3
lumbricals are innervated by the ______ nerve while the interossei are innervated the ______ nerve
lumbrical –> median
interossei –> ulnar
which phalange do the lumbricals and interossei insert into
proximal phalange
the lumbricals originate from the long flexor tendons of which forearm muscle
flexor digitorum profundus
what is meant by bipennate muscles and which interossei are this
they have two bellies, dorsal interossei are bipennate as they originate from both the adjacent metacarpals
which interossei originate from just one adjacent metacarpal
palmar
where do the interossei originate
the shaft of the metacarpals
which interossei abduct the fingers
dorsal
which interossei adduct the fingers
palmar
how can you remember the actions of the interossei
DAB and PAD
innervation of the interossei
ulnar C8, T1
ulnar nerve originates from what cord and trunk
inferior trunk –> medial cord
what is the name of nerve damage to the inferior trunk
Klumpke’s paralysis
which two roots come together to form the inferior trunk
C8 and T1
arterial supply of the superficial palmar arch
ulnar
arterial supply of the deep palmar arch
radial
the median nerve enters the hand through the _______ _______
carpal tunnel
ulnar nerve travels _______ to the ulnar artery
medial
ulnar nerve is a branch of which cord
medial cord
nerve that supplies cutaneous sensation to the little finger and half the ring finger on the palmar and dorsal sides
ulnar
nerve that supplies cutaneous sensation to the hand from half ring to thumb
median
nerve that supplies the dorsal aspect of the hand with cutaneous sensation from half ring to thumb but not the tips of fingers
radial
describe the dermatome of radial nerve on the hand
dorsal surface, half ring to thumb, not the fingertips
describe the dermatome of the median nerve on the hand
palmar surface from half ring to thumb including the fingertips
