01 Elbow/Forearm/Hand Flashcards Preview

7202 Anatomy > 01 Elbow/Forearm/Hand > Flashcards

Flashcards in 01 Elbow/Forearm/Hand Deck (46):
1

deep muscles of the forearm

finger and thumb flexors

2

Where do the tendons cross the wrist joint?

through the carpal tunnel (attach to the phalanges)

3

ulnar nerve innervates

4th and 5th fingers

4

Superficial muscles of the forearm

wrist flexors

5

Proximal attachment of the wrist flexors

medial epicondyle

6

Brachial artery divides into the ____ and ____ arteries at the radial head

- radial
- ulnar

7

Deep muscles of the posterior compartment include

-supinator
-"outcropping" muscles: two extensors and long abductor of the thumb

8

Wrist joint is the radiocarpal joint between which 3 bones

- distal radius
- scaphoid
- lunate

9

How many carpal bones are there?

7 (Some Lovers Try Positions That They Cant Handle) (SLTPTTCH)

10

How many metacarpals?

5

11

Thumb has __ phalanges

2

12

Each digit with the exception of the thumb has ___ phalanges

3

13

Space between the two rows of carpal bones is called the

mid-carpal joint

14

The metacarpal heads are bound together by which ligaments

deep transverse metacarpal ligaments

15

One of the most common sites of AVN

scaphoid (can avoid AVN via immobilization)
*if you touch anatomical snuff box and its tender=indicative of scaphoid fracture)

16

carpal tunnel syndrome

entrapment produced by compression of the median nerve

17

symptoms of CTS

-pain and tingling over thenar eminence
-weakness of thumb and finger flexion
-later atrophy of thenar muscles

18

Floor of the carpal tunnel

carpal arch

19

Roof of the carpal tunnel

flexor retinaculum

20

Structures that pass through the carpal tunnel

-8 tendons of the deep and superficial finger flexors
-tendon of the flexor pollicis longus
-median nerve

21

carpal tunnel release

cutting felxor retinaculum and transverse carpal ligament

22

Palmar interossei _____ the digits

adduct (PAD)

23

Dorsal interossei ____ the digits

abduct (DAB)

24

Palmar and dorsal interossei are innervated by

ulnar nerve

25

Adductor pollicis

-adducts thumb
-innervated by the ulnar nerve

26

thenar muscles

-flexor pollicis brevis
-abductor pollicis brevis
-opponens pollicis

27

Thenar muscles are innervated by

recurrent branch of the median nerve

28

hypothenar muscles

intrinsic muscles of the 5th digit
-flexor digiti minimi
- abductor digiti minimi
- opponens digiti minimi

29

Hypothenar muscles are innervated by

ulnar nerve

30

lumbrical muscles attach to

tendons of the long finger flexors in the palm and to the extensor mechanism

31

Medial 2 lumbricals are innervated by

ulnar nerve

32

Lateral 2 lumbricals are innervated by

median nerve

33

Action of the lumbricals

- flex the MC joints
- extend the proximal and distal IP joints

34

Extensor mechanism

-on dorsal surface of each finger
-an expansion of connective tissue that spreads around the MCP joints

35

Lumbrical and interosseous muscles attach to

the lateral "wing tendons" of the extensor mechanism

36

Action of the extensor muscles

-Flex the MC joints
-Extend the PIP and DIP joints which permits precision movements of the fingers

37

Flexor digitorum tendons pass through the carpal tunnel ensheathed with a common synovial membrane called

ulnar bursa

38

Flexor pollicis longus tendon has a separate synovial sheath called the

radial bursa

39

Superficial branch of the radial nerve enters the hand over

anatomical snuff box

40

Close packed position of the wrist

extension

41

Loose packed position of the wrist

flexion

42

Extension, flexion, pronation and supination are all

physiologic motions

43

Flexion and extension of the wrist occur at the

radiocarpal joint
midcarpal joint

44

True/False: there is no motion occurring at the CMC joint

True (there is no motion where distal bones communicate with the hand)

45

Radial and ulnar deviation occur at the

midcarpal joint

46

Where structures that are coming together making a point like the point of a triangle

Arcade of Froshe