Forearm, Wrist, Hand

Question 1

at the ______ the axillary artery turns into the _____ artery

Answer 1

inferior border of teres major, brachial artery

Question 2

major branch of brachial artery

Answer 2

brachial profunda artery

Question 3

at _____ the brachial artery becomes ______

Answer 3

level of the elbow, divides into radial and ulnar artery

Question 4

major branches of ulnar artery

Answer 4

anterior and posterior interosseous arteries

Question 5

what supplies superficial/deep palmar arches

Answer 5

ulnar artery: superficial

radial artery: deep

Question 6

describe basic venous drainage of hand

Answer 6

doral venous network drains palmar arches

cephalic vein laterally, basilic vein proximally

Question 7

what vein connects basilic and cephalic veins

Answer 7

median cuboidal vein

Question 8

list carpal bones

Answer 8

1. Scaphoid, lunate, triquetrum, pisiform (lat-med)
2. Hammate, Capitate, trapezoid, trapezium (med-lat)

So Long To Pinky, Here Comes The Thumb (CW from thumb)

Question 9

name 1, 10, 11, 12, 13, 14

Answer 9

1: styloid process of radius
10: metacarpal
11: proximal phalange
12: middle phalange
13: distal phalange
14: styloid process of ulna

Question 10

Radiocarpal articulation is between ____ and _____

Answer 10

distal radius and proximal carpals

Question 11

Radiocarpal articulation is ____ type and for _____

Answer 11

condyloid type

wrist flexion/extension and wrist AB/AD

Question 12

midcarpal articulation is between ____ and ______

Answer 12

proximal and distal row of carpal bones

Question 13

midcarpal articulation is _____ type and for ______

Answer 13

plane synovial joint

gliding motions between carpals

Question 14

distal radioulnar joint is between _____ and ______

Answer 14

distal end of radius and ulna

Question 15

distal radioulnar joint is ____ type and for _____

Answer 15

pivot synovial joint

supination/pronation

Question 16

colle’s fracture

Answer 16

dorsal displasement of distal fracture

usually in post menopausal women after fall on outstreched hand

Question 17

two stabilizing ligaments of hand

Answer 17

extensor retaculum and flexor retinaculum

Question 18

extensors attachments

Answer 18

lateral epicondyle of humerus

base of metacarpals

Question 19

extensors action

Answer 19

wrist extension

Question 20

innervation of extensors

Answer 20

radial nerve

Question 21

lateral epicondylitis

Answer 21

repeated forceful flexion and extension of wrist causing inflammation of periosteum of lateral epicondyle

Question 22

list muscles acting on the wrist

Answer 22

1. extensors
2. flexors
3. palmaris longus

Question 23

flexors attachements

Answer 23

medial epicondyle of humerus

base of metacarpals

Question 24

action fo flexors

Answer 24

wrist flexion

Question 25

innervation of flexors

Answer 25

median and ulnar

Question 26

palmaris longus attachments

Answer 26

medial epicondyle of humerus to fascia of palm

Question 27

palmaris longus action

Answer 27

tenses fasccia of palm

Question 28

innervation of palmaris longus

Answer 28

median nerve

Question 29

non manipulative prehension patterns

Answer 29

1. cylindrical grip 2. hook grip 3. spherical grip

Question 30

manipulative prehension

Answer 30

1. palmar pinch 2. lateral pinch 3. tip to tip pinch

Question 31

5 risk factors for wrist and hand pain for dentists

Answer 31

1. awkward wrist/finger position 2. repeated pinch with wrist flexion 3. vibrating equipment 4. poor instrument design 5. increased duration and intensity of exposure

Question 32

list 4 articulations of digits and thumb

Answer 32

Question 33

where does ad/abduction occur in thumb?

Answer 33

CMC (carpometacarpal), perpendicular to plane of palm

Question 34

where does flexion/extension occur in thumb?

Answer 34

CMC, MP, IP (parallel to plane of palm) carpometacarpal, metacarpophalangeal, interphalangeal

Question 35

where does oppositition occur in thumb?

Answer 35

CMC joint (carpometacarpal)

Question 36

list extrinsic digit flexors and what innervates them

Answer 36

flexor digitorum superficialis and flexor digitorum profundus innervated by median and ulnar nerves

Question 37

what is contained in carpal tunnel?

Answer 37

extrinsic tendons of digit flexors and main branch of median nerve

Question 38

list extrinsic digit extensors and what innervates them

Answer 38

extensor digitorum (ED, EDC), Extensor indicis proprius, extensor digiti minimi all innervated by posterior interosseous nerve via radial nerve

Question 39

list extrinsic muscles of thumb

Answer 39

flexor pollicis longus, extensor pollicis longus and brevis, abductor pollicis longus

Question 40

anatomical snuff box bordered by what?

Answer 40

extensor pollicis brevis and extensor pollicis longus

Question 41

intrinsic hand muscles and what innervates them

Answer 41

hypothenar group (innervated by ulnar nerve) thenar group (innervated by median nerve)

Question 42

lumbricles attachments

Answer 42

flexor tendons in palm dorsum of proximal phalanges

Question 43

action of lumbricles

Answer 43

flex at MP and extend at PIP/DIP

Question 44

innervation of lumbricles

Answer 44

median and ulnar nerve

Question 45

attachments of dorsal and palmar interossei

Answer 45

metacarpals to proximal phalanges

Question 46

innervation of dorsal and palmer interossei

Answer 46

ulnar nerve

Question 47

action of dorsal and palmer interossei

Answer 47

dorsal: ABduction by 4 muscles palmer: adduction by 3 muscles DAB PAD

Question 48

thenar eminence

Answer 48

Question 49

Label

Answer 49

A: distal palmer crease B: proximal palmar crease C: hypothenar eminence D: radial longitudinal crease

Question 50

cutaneous innervatio of the hand

Answer 50

ulnar, median and radial nerves supply the skin of the hand