Forearm, Wrist and Hand

Question 1

What are the three major parts of the hand from proximal to distal?

Answer 1

Wrist

Metacarpals

Fingers

Question 2

Name these parts from proximal to distal

Answer 2

Question 3

What is the only finger than has only two phalanges? As opposed to three for all the other ones.

Answer 3

The thumb

Question 4

How many carpal bones are in your wrist?

Answer 4

8

Question 5

What shape do your carpal bones form?

Answer 5

Arch

Question 6

What does the mnemonic,

Some

Lovers

Try

Positions

That

They

Cannot

Handle

Stand for?

Answer 6

Scaphoid

Luante

Triquetrum

Pisiform

Trapezium

Trapezoid

Capitate

Hammate

Question 7

Review this radiograph of the wrist bones

Answer 7

Question 8

What does the trapezium articulate with?

What about the capitate?

Answer 8

Trapezium: Base of first metacarpal

Capitate: Base of third metacarpal

Question 9

Where do the blood vessels enter through the wrist?

Answer 9

At the distal scaphoid

Question 10

What is a potential risk of a scaphoid fracture?

Answer 10

Cuts off blood supply to the proximal part of the scaphoid. This leads to avascular necrosis

Question 11

What is the most commonly dislocated carpal bone?

Answer 11

The Lunate

Question 12

What type of join is the trapezium? Why is it important?

Answer 12

Saddle joint

Allows for wide range of motion

Question 13

Regarding the carpometacarpal joints, what type of joint is the first carpometacarpal articulation and what does it allow u to do?

Answer 13

Saddle joint

Allows for crossing of the thumb over the palm

Allows for gripping

Question 14

Why does radiocarpal articulation not include the distal end of the ulna?

Answer 14

Because the ulna is separated from the carpal bones by an articular disc

Question 15

Gloss over this image of the joints of the wrist

Answer 15

Question 16

Names of the long flexors of fingers 2 to 5?

Answer 16

Flexor digitorum superficialis

Flexor digitorum profundus

Question 17

Which long flexor of the wrist, in addition to flexing the second through fifth fingers, also assits to flex the wrist (radiocarpal joint?)

Answer 17

Flexor digitorum profundus

Question 18

True of false

The flexor digitorum superificalis also helps flex the wrist

Answer 18

True. Both of the long flexors of the fingers flex the wrist

Question 19

What are the two major long extensors of the fingers?

Answer 19

Extensor digitorum

Extensor indicis

Question 20

Which extensor of the fingers is used for pointing?

Answer 20

Extensor indicis

(think indicate)

Question 21

Functions of the extensor indicis

Answer 21

Extends and adducts the second finger

Used for pointing

Question 22

What are the three long extensors of the thumb

Answer 22

Abductor pollicis longus

Extensor pollicis brevis

Extensor pollicis longus

Question 23

Which of the three long muscles of the thumb, in addition to extend the thumb and abducting the wrist, also helps to abduct the thumb?

Answer 23

Abductor pollicis longus

Question 24

Where does the carpal tunnel extend from?

Answer 24

From scaphoid and trapezium laterally (radial side) to the pisiform and hook of the hamate medially (ulna side)

Question 25

What is a tendom sheath?

Answer 25

Layer of membrane around a tendon

Question 26

Functions of the flexor pollicis brevis

Answer 26

Flexes the thumb through the carpometacarpal and metacarpophalangeal joints

Assists in opposition of the thumb

Question 27

What muscle is not pat of the thenar eminence but still helps with the movement of the thumb?

Answer 27

Adductor Pollicis

Question 28

Which three arteries supply the hand?

Answer 28

Brachial, ulnar and radial

Question 29

Which two arteries for a interconnected, superficial deep arch?

Answer 29

Ulnar and Radial

Question 30

What does the dorsal venous network drain into?

Answer 30

The cephalic (laterally) and basilic veins (medially). See image

Question 31

Which two fingers does the ulnar nerve stimulate?

Answer 31

Pinky and Ring

Question 32

Which fingers does the median nerve stimulate?

Answer 32

Thumb, pointer, middle and part of the ring

Question 33

Good luck on the exam guys

Answer 33

[See front of the card]