Anatomy: Hand

Front 1

Two movements of the thumb:

Back 1

Opposition and reposition

Front 2

Prime mover of opposition

Back 2

Opponens policis

Front 3

Prime mover of reposition

Back 3

Abductor policis longus; Extensor policis longus

Front 4

Nerves that innervate hand muscles

Back 4

Ulnar nerve, median nerve, superficial branch of the ulnar nerve

Front 5

The first two lumbricals are innervated by the ____ and the second two by _______

Back 5

Median nerve; deep branch of the ulnar

Front 6

Paralysis of the lumbricals

Back 6

Hyperextension at the metacarpel pahalngeal joints and full flexion of the interphalangeal joints

Front 7

Cause of hyperextension

Back 7

3 anterior extensors (FDS, FI and FDM) have greater combined activity than the two anterior flexor muscles; hyperextension strecthes flexors in interphalangeal joints

Front 8

DAB; PAD

Back 8

dorsal interossei abduct (flex at metacarpalphalangeal and extend at interohalangeal

Front 9

Paralysis of the thenar muscles results in an inability to:

Back 9

oppose the thumb

Front 10

Cause of ape hand

Back 10

Paralysis of the thenar eminence (atrophy of muscles, inability to lateral move thumb - excessive medial movement)

Front 11

_____ provides most of the fibers that control abduction and adduction of the fingers at the MCP joints

Back 11

T1

Front 12

To test for median nerve

Back 12

Touch the base of the thumb to the finger

Front 13

To test for ulnar nerve damage

Back 13

Clench paper tightly between ring finger and middle finger and attempt to dislodge; cannot if palmar or dorsal interosseous is paralyzed

Front 14

Paralysis of the ulnar muscles produces

Back 14

Claw hand (3 and 4 lumbricals are forced into flexion)

Front 15

Klumpsky's palsy is

Back 15

A combination of ape and claw hand; loss of action sof both sets of intrinsic hand muscles

Front 16

Klumpsky's palsy is caused by injury to the ______

Back 16

brachial plexus (C8 and T1) - sever lower brachial plaxus injury

Front 17

Klumke's palsy includes:

Back 17

Paralsyis of all 4 lumbricals, paralysis of dorsla interossie, abducter minmi and oponens policis (causes thumb to be excessively lat. rotated)

Front 18

Anterior sensory nerve innovations:

Back 18

ulnar nerve- Medial one third of hand an done and ahlaf digits; medial nerve lateral two thirds and 2.5 digits;

Front 19

___ is referred to as the "eye of the hand"

Back 19

Median nerve

Front 20

Sensory innervations on posterior side:

Back 20

Medial third: ulupnar nerve/superficial radial lateral 2/3

Front 21

To assess integrity of median nerve:

Back 21

Apply probe to palmar surface of index finger

Front 22

Assess integrity of the ulnar nerve

Back 22

Probe applied to palmar surface of little finger

Front 23

Assess integrity of superficial radio nerve

Back 23

Probe between thumb and index finger

Front 24

Spinal nerve for thumb

Back 24

C6

Front 25

Spinal nerve for index, ring and middle finger

Back 25

C7

Front 26

Spinal nerve for teh skin of the little finger

Back 26

C8

Front 27

Carpal tiunnel sndrome produces ____ and ____ disorders of the muscles of the thenar eminence

Back 27

sensory and motor

Front 28

The superficial palmar arch is the direct continuation of the _____ in the hand

Back 28

ulnar artery

Front 29

The deep palmar arch is the continuation of the _____ artery in the hand

Back 29

radial

Front 30

The ____ artery goes through the anatomical snuffbox

Back 30

radial

Front 31

The Allen test assesses for

Back 31

The source of blood flow in a patient's hand (ulnar or radial arteries)