The Forearm/Wrist/Hand

Question 1

where do digitorum muscles connect to

Answer 1

fingers

Question 2

where do digiti minimi muscles connect to

Answer 2

little finger

Question 3

where do indicis muscles connect to

Answer 3

index finger

Question 4

where do pollicis muscles connect to

Answer 4

thumb

Question 5

where do carpi muscles connect to

Answer 5

wrist

Question 6

where do carpi radialis muscles connect to

Answer 6

radial deviation of wrist (abduction)

Question 7

where do carpi ulnaris muscles connect to

Answer 7

ulnar deviation of wrist (adduction)

Question 8

what flexors are in the deep layer of the forearm

Answer 8

• flexor pollicis longus
• flexor digitorum profundus

Question 9

where does the flexor pollicis longus originate and insert

Answer 9

• origin: anterior surface of radius and adjacent interosseous membrane of forearm
• insertion: palmar aspect of base of distal phalanx of thumb

Question 10

where does the flexor digitorum profundus originate and insert

Answer 10

• origin: medial aspect of coronoid process of ulna and superior three quarters of anterior and medial surfaces of body of ulna
• insertion: palmar aspects of bases of the distal phalanges of index, middle, ring and little fingers

Question 11

what flexors are in the intermediate layer of the forearm

Answer 11

• flexor digitorum superficialis

Question 12

where does the flexor digitorum superficialis originate and insert

Answer 12

• origin: medial epicondyle of humerus, via the common flexor tendon, sublime tubercle of ulna and proximal half of anterior border of radius
• insertion: palmar aspects of the bodies of middle phalanges of the index, middle, ring and little finger

Question 13

what flexors are in the superficial layer of the forearm

Answer 13

• flexor carpi radialis
• palmaris longus
• flexor carpi ulnaris

Question 14

where does flexor carpi radialis originate and insert

Answer 14

• origin: medial epicondyle of humerus, via common flexor tendon
• insertion: palmar aspects of bases of second and third metacarpal bones

Question 15

where does the palmaris longus originate and insert

Answer 15

• origin: medial epicondyle of humerus, via common flexor tendon
• insertion: palmar aponeurosis and flexor retinaculum of hand

Question 16

where does the flexor carpi ulnaris originate and insert

Answer 16

• origin: medial epicondyle of humerus via common flexor tendon, proximal two thirds of body of ulna and olecranon of ulna
• insertion: pisiform, hook of hamate and palmar aspect of base of fifth metacarpal bones

Question 17

what extensors are in the superficial layer

Answer 17

• extensor carpi radialis longus
• extensor carpi radialis brevis
• extensor digitorum
• extensor digiti minimi
• extensor carpi ulnaris

Question 18

where does extensor carpi radialis longus originate and insert

Answer 18

• origin: inferior one third of lateral supracondylar ridge of humerus
• insertion: dorsal aspect of base of second metacarpal bone

Question 19

where does extensor carpi radialis brevis originate and insert

Answer 19

• origin: lateral epicondyle of humerus, via common extensor tendon
• insertion: dorsal aspect of base of third metacarpal bone

Question 20

where does extensor digitorum originate and insert

Answer 20

• origin: lateral epicondyle of humerus via common extensor tendon
• insertion: dorsal aspects of bases of both the middle and distal phalanges of the index, middle, ring and ,little fingers

Question 21

where does extensor digiti minimi originate and insert

Answer 21

• origin: lateral epicondyle of humerus via common extensor tendon
• insertion: extensor expansion of little finger

Question 22

where does extensor carpi ulnaris originate and insert

Answer 22

• origin: lateral epicondyle of humerus, via common extensor tendon, and posterior border of ulna
• insertion: medial aspect of base of fifth metacarpal bone

Question 23

what extensors are in the deep layer

Answer 23

• extensor indicis
• extensor pollicis longus
• extensor pollicis brevis
• abductor pollicis longus

Question 24

where does the extensor indicis originate and insert

Answer 24

• origin: posterior surface of distal one third of ulna and adjacent interosseous membrane of forearm
• insertion: extensor expansion of index finger

Question 25

where does extensor pollicis longus originate and insert

Answer 25

• origin: posterior surface of middle one third of ulna and adjacent interosseous membrane of forearm
• insertion: dorsal aspect of base of distal phalanx of thumb

Question 26

where does extensor pollicis brevis originate and insert

Answer 26

• origin: posterior surface of distal half of radius and adjacent interosseous membrane of forearm
• insertion: dorsal aspect of base of proximal phalanx of thumb

Question 27

where does abductor pollicis longus originate and insert

Answer 27

• origin: posterior aspects of proximal half of ulna and middle one third of radius adjacent interosseus membrane of forearm
• insertion: lateral aspect of base of first metacarpal bone

Question 28

which muscles make up the thenar eminence

Answer 28

• abductor pollicis brevis
• flexor pollicis brevis
• opponens pollicis

Question 29

which muscles make up the hypothenar eminences

Answer 29

• abductor digit minimi
• flexor digit minimi
• opponens digiti minimi
• palmaris brevis

Question 30

what are all the finger muscles

Answer 30

• third palmar interosseous
• second palmar interosseous
• first palmar interosseous
• fourth dorsal interosseous
• third dorsal interosseous
• second dorsal interosseous
• first dorsal interosseous
• fourth lumbrical
• third lumbrical
• second lumbrical
• first lumbrical

Question 31

what are the hands manipulation tasks

Answer 31

• non-contact / contact
• prehensile / non-prehensile
• no motion / motion
• motion within hand / motion not within hand
• motion at contact / no motion at contact

Question 32

what are all the bones in the hand and wrist

Answer 32

• distal phalanges
• intermediate phalanges
• proximal phalanges
• metacarpals
• carpals
  
  • scaphoid
  • lunate
  • triquetrum
  • pisiform
  • trapezium
  • trapezoid
  • capitate
  • hamate

Question 33

what is the carpal tunnel

Answer 33

• formed by transverse carpal ligament or flexor retinaculum
• between pisiform / hamate and trapezium / scaphoid
• pulley for long flexor tendons
• stabilises arch of wrist

Question 34

what movements are possible at the wrist

Answer 34

• extension
• flexion
• radial deviation
• ulnar deviation
• pronation
• supination

Question 35

what movements are possible at the thumb

Answer 35

• flexion
• extension
• abduction
• adduction
• opposition

Question 36

what movements are possible at the fingers

Answer 36

• hyperextension
• extension
• flexion
• abduction
• adduction
• circumduction
• opposition

Question 37

what are the different joints in the wrist and hand

Answer 37

• radiocarpal
• carpometacarpal
• metacarpophalangeal
• proximal interphalangeal
• distal interphalangeal

Question 38

what joint type is radiocarpal and what movements are possible

Answer 38

• condyloid
• flexion / extension
• abduction / adduction

Question 39

what type of joint is carpometacarpal and what movements are possible

Answer 39

• thumb (1st CMCJ)
  
  • saddle
  • flexion / extension
  • abduction / adduction
  • opposition
• fingers (2nd - 5th CMCJ)
  
  • plane joints
  • minimal amounts of movement
  • flexion / extension

Question 40

what type of joint is metacarpophalangeal and what movements are possible

Answer 40

• condyloid
• flexion / extension
• abduction / adduction
• circumduction

Question 41

what type of joint is proximal interphalangeal and what movements are possible

Answer 41

• hinge joint
• flexion / extension

Question 42

what type of joint is distal interphalangeal and what movements are possible

Answer 42

• hinge
• flexion / extension