Hand and wrist

Question 0

the index/middle is responsible for how much of the hand’s function

Answer 0

20%

Question 1

the thumb is redponsible for how much of the hand’s function

Answer 1

40%

Question 2

the ring/pinky is responsible for how much of the hand’s function?

Answer 2

10%

Question 3

which carpal bone is boat shaped?

Answer 3

scaphoid

Question 4

which carpal bone is moon shaped?

Answer 4

lunate

Question 5

which carpal bone is pyramidal?

Answer 5

triquetrium

Question 6

which carpal bone is a sesamoid bone?

Answer 6

pisiform

Question 7

which carpal bone is last to ossify? (at 12 y.o)

Answer 7

pisiform

Question 8

which is the largest carpal bone, which is also the 1st to ossify? (1-2 y.o)

Answer 8

capitate

Question 9

which carpal bone has a hook?

Answer 9

hamate

Question 10

which carpal bones belong to the proximal row? distal row?

Answer 10

proximal: some lovers try positions
scaphoid, lunate, triquetrium, pisiform,
distal: they can’t handle
trapezium, trapezoid, capitate, hamate

Question 11

which finger does not have a middle phalanx?

Answer 11

thumb

Question 12

the radiocarpal joint is made up of

Answer 12

the radius, scaphoid and lunate

Question 13

the mid carpal joint is formed by

Answer 13

the distal and proximal carpal bones

Question 14

how many extrinsic muscles of the hand is present?

Answer 14

19/20 (+palmaris brevis:40% of the time

Question 15

[innervation and action] extensor carpi radialis longus

Answer 15

radial nerve; extends and abducts the hand

Question 16

[innervation and action] extensor carpi radialis brevis

Answer 16

deep branch of radial nerve; extension and abduction of the hand

Question 17

[innervation and action] extensor carpi ulnaris

Answer 17

deep branch of the radial nerve; extension of the hand

Question 18

[innervation and action] extensor digitorum

Answer 18

deep branch of radial nerve; extensor of medial 4 digits

Question 19

[innervation and action] extensor digitorum minimi

Answer 19

posterior interosseus nerve; extends the proximal phalanx of the 5th digit

Question 20

what structures pass through the carpal tunnel?

Answer 20

flexor digitorum superficialis (4 tendons) flexor digitorum profundus (4 tendons) flexor pollicis longus (1tendon) median nerve

Question 21

what holds the carpal tunnel in place?

Answer 21

flexor retinaculum

Question 22

[innervation and action] flexor carpi radialis

Answer 22

median nerve; flexes and abducts hand at wrist

Question 23

[innervation and action] palmaris longus

Answer 23

median nerve; flexes hand and tenses palmar aponeurosis

Question 24

[innervation and action] flexor carpi ulnaris

Answer 24

ulnar; flexes and adducts hand

Question 25

[innervation and action] flexor digitorum superficialis

Answer 25

median nerve; flexes middle 4 digits

Question 26

[innervation and action] flexor digitorum profundus

Answer 26

ulnar, median; flexes phalanges 4,5 (ulnar), 2,3 (median)

Question 27

[innervation] 1st and 2nd lumbricals

Answer 27

median nerve

Question 28

[innervation] 3rd and 4th lumbricals and interossei

Answer 28

ulnar nerve

Question 29

[innervation] abductor pollicis brevis, opponens pollicis brevis

Answer 29

median nerve

Question 30

flexor pollicis brevis superficial head

Answer 30

median nerve

Question 31

[innervation] flexor pollicis brevis deep head; adductor pollicis

Answer 31

ulnar nerve

Question 33

tinel's test

Answer 33

tap the median neve along its course in the wrist positive: tingling sensation

Question 34

Phalen's test

Answer 34

position dorsal side of hands against each other positive: parasthesia, hyposthesia, pain

Question 35

Which annular ligaments prevent bowstringing of tendon?

Answer 35

A2-A4

Question 36

boundaries of the anatomical snuff box

Answer 36

medial: extensor pollicis longus lateral: abductor pollicis longus and extensor pollicis brevis

Question 37

which nerve can be found in the anatomical snuff box?

Answer 37

radial nerve

Question 38

De Quervaine's tendosynovitis Syndrome

Answer 38

inflammation of the tendons of the extensor pollicis brevis

Question 39

Finkelstein's test

Answer 39

fist made with the thumb and wrist ulnary deviated, stretching the tendons over the radial styloid causing significant pain

Question 40

tennis elbow

Answer 40

inflammation of the origin of the extensor muscles of the forearm

Question 41

golfer's elbow

Answer 41

small tear or inflammation in the origin of the flexor muscles of the forearm

Question 42

cubital tunnel syndrome

Answer 42

compression of the ulnar nerve at the cubital tunnel

Question 54

symptoms of carpal tunnel syndrome

Answer 54

pain, loss of sensation, parasthesia