Antebrachium, Wrist, and Hand

Question 1

the proximal radioulnar joint is a _____ joint

Accepted Answer

synovial

Question 2

the head of the radius articulates with the

Accepted Answer

radial notch of the ulna

Question 3

the radius is held in place by the

Accepted Answer

anular ligament

Question 4

during pronation and supination, the radial head rotates within

Accepted Answer

the anular ligament

Question 5

_________________ __________ connects radius and ulna along their diaphysis

Accepted Answer

interosseous membrane

Question 6

the interosseous membrane forms the ____________ ____________ joint

Accepted Answer

radioulnar syndesmosis

Question 7

in the distal radioulnar joint, the head of ulna articulates with the

Accepted Answer

ulnar notch on the radius

Question 8

the distal radioulnar joint includes

Accepted Answer

fibrocartilagenous articular disc

Question 9

muscles of supination

Accepted Answer

supinator and biceps brachii

Question 10

muscles of pronation

Accepted Answer

pronator quadratus and pronator teres

Question 11

the pronator teres and pronator quadratus are both supplied by the

Accepted Answer

median nerve

Question 12

which digits have how many phalanges?

Accepted Answer

digits 2-5: 3 phalanges digit 1: 2 phalanges

Question 13

wrist complex contains __ proximal-distal joints called

Accepted Answer

2 radiocarpal midcarpal

Question 14

radiocarpal joint components

Accepted Answer

proximal: radius, articular disc (triangular ligament) distal: scaphoid, lunate, triquetrum

Question 15

the articular disc prevents

Accepted Answer

carpal bones from articulating with the ulna

Question 16

the triquetrum only articulates with the

Accepted Answer

articular disc

Question 17

midcarpal joint components

Accepted Answer

distal: trapezium, trapezoid, capitate, hamate proximal components: scaphoid, lunate, triquetrum

Question 18

the carpal tunnel is formed by

Accepted Answer

transverse carpal ligament or flexor retinaculum

Question 19

transverse carpal ligament/flexor retinaculum

Accepted Answer

large fibrous ligament that stretches over the volar sde of the wrist and forms a tunner with the carpals through which tendons pass, and holds the tendons down

Question 20

carpal tunnel functions

Accepted Answer

protect tendons and nerves keep tendons close to bones to act as a pulley

Question 21

joints between carpals are ______________ joints

Accepted Answer

intercarpal

Question 22

joints between carpals and metacarpals are called

Accepted Answer

carpometacarpal joints

Question 23

movements of the wrist

Accepted Answer

flexion/extension abduction/adduction - also called ulnar and radial deviation

Question 24

muscles with tendons that cross the anterior of the wrist can assist in

Accepted Answer

flexion

Question 25

wrist flexion muscles

Accepted Answer

flexor carpi radialis flexor carpi ulnaris flexor digitorum superficialis flexor digitorum profundis

Question 26

intermediate anterior forearm

Accepted Answer

flexor digitorum superficialis

Question 27

deep anterior forearm muscles

Accepted Answer

flexor digitorum profundus flexor pollicis longus pronator quadratus

Question 28

the median nerve supplies

Accepted Answer

the majority of the anterior compartment of the forearm

Question 29

median nerve exceptions

Accepted Answer

brachioradialis - radial nerve flexor carpi ulnaris - ulnar flexor digitorum profundus IV and V - ulnar

Question 30

wrist extensors

Accepted Answer

extensor carpi radialis longus extensor carpi radialis brevis extensor carpi ulnaris extensor digitorum extensor indicis extensor digit minimi

Question 31

wrist adductors

Accepted Answer

flexor carpi ulnaris extensor carpi ulnaris

Question 32

wrist abductors

Accepted Answer

flexor carpi radialis extensor carpi radialis

Question 33

thumb muscles that assist in abduction

Accepted Answer

abductor pollicis longus extensor pollicis longus extensor pollicis brevis

Question 34

proximal carpal bones serve as a

Accepted Answer

mechanical link between the radius and carpal bones

Question 35

proximal carpal bones tend to ______ _______ when force is applied but

Accepted Answer

collapse anteriorly are stabilized by the intercarpal ligaments

Question 36

tendons and nerves in the carpal tunnel

Accepted Answer

flexor digitorum profundus flexor digitorum superficialis flexor pollicis longus median nerve

Question 37

distally, the flexor retinaculum gives way to the

Accepted Answer

palmar aponeurosis

Question 38

palmar aponeurosis covers the

Accepted Answer

tendons, blood supply, nerves and muscles

Question 39

palmar aponeurosis connects on its distal side to the

Accepted Answer

superficial transverse metacarpal ligament

Question 40

ligaments of all of the extrinsic finger extension muscles pass through the

Accepted Answer

extensor retinaculum

Question 41

extensor retinaculum function

Accepted Answer

hold the tendons in place and not let them wander medially/laterally ideal line of pull

Question 42

the posterior side is much ______ protected than the anterior side

Accepted Answer

less flexors more important evolutionarily

Question 43

the carpometacarpal joint of the thumb has it's own _____ _____ and a greater

Accepted Answer

synovial joint range of motion

Question 44

carpometacarpal joints of the fingers share

Accepted Answer

one synovial cavity

Question 45

all carpometacarpal joints are capable of

Accepted Answer

flexion/extension

Question 46

metacarpals of the third and fourth fingers have ... but the fifth metacarpal ...

Accepted Answer

limited range of motion has more

Question 47

the relatively immobile second and third joints provide a

Accepted Answer

stable axis for opposition

Question 48

finger joint (metacarpophalangeal) components

Accepted Answer

volar plate 2 ligaments - collateral and accessory collateral ligaments

Question 49

volar plate

Accepted Answer

tough pad of fibrocartilage that sits on the volar surface provides stability by preventing hyperextension

Question 50

collateral ligament connects

Accepted Answer

metacarpal to proximal phalanx

Question 51

accessory collateral ligament connects

Accepted Answer

metacarpal to the volar plate

Question 52

metacarpophalangeal joints are connected to each other by the

Accepted Answer

deep transverse metacarpal ligament

Question 53

the deep transverse metacarpal ligament connects the

Accepted Answer

volar plates of the metacarpophalangeal joints

Question 54

the flexor tendons pass

Accepted Answer

over the deep transverse metacarpal ligament

Question 55

in the interphalangeal joints, the collective ligaments are called

Accepted Answer

collateral ligaments

Question 56

collateral ligaments of the interphalangeal joints connect

Accepted Answer

proximal to distal phalanx, and to volar plate

Question 57

two main extrinsic finger flexion muscles

Accepted Answer

flexor digitorum superficialis - flexes MCP and PIP joints flexor digitorum profundus - flexes MCP, PIP, and DIP joints

Question 58

the extrinsic flexors pass through

Accepted Answer

fibrous tunnels (pulleys)

Question 59

three extrinsic finger extension muscles

Accepted Answer

extensor digitorum extensor digiti minimi extensor indicis

Question 60

at MCP joint, tendons of the extrinsic finger extension muscles meet with a broad aponeurosis called the

Accepted Answer

extensor hood

Question 61

the extensor hood sits ... and has ligaments that reach ...

Accepted Answer

over the MCP joint forward to the distal phalanx

Question 62

intrinsic muscles of the hands

Accepted Answer

lumbricals

Question 63

lumbricals have no

Accepted Answer

bone attachments

Question 64

interossei muscles insert onto the ... and contribute to

Accepted Answer

extensor hoods finger extension and ab/adduction

Antebrachium, Wrist, and Hand

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