Week 7: Wrist and Hand Flashcards Preview

Fall 2014: Anatomy & Kinesiology > Week 7: Wrist and Hand > Flashcards

Flashcards in Week 7: Wrist and Hand Deck (64):
1

Actions (2) of ECRL

1. Extension
2. Radial deviation of hand at the wrist

2

Origin of ECRL

Lateral supracondylar ridge of the humerus

3

Insertion of ECRL

Base of 2nd metacarpal

4

Innervation of ECRL

Radian N
c6-c7

5

Actions (2) of ECRB?

1. Extension
2. Radial deviation of hand at the wrist

6

Origin of ECRB?

Lateral epicondyle of the humerus via the common extensor tendon

7

Insertion of ECRB?

base of 3rd metacarpal

8

Innervation of ECRB?

Radial N
C7-C8

9

Actions (2) of ECU?

1. Extension
2. Ulnar deviation of the hand at the wrist

10

Origin of ECU?

Lateral epicondyle of the humerus via the common extensor tendon

11

Insertion of ECU?

base of 5th metacarpal

12

Innervation of ECU?

Radial N.
C7-C8

13

Action of PL?

flexion of hand @ wrist

14

Origin of PL?

Medial epicondyle of the humerus via the common flexor tendon

15

Insertion of PL?

Palmar aponeurosis

16

Innervation of PL?

Median Nerve C7-C8

17

Actions (2) of FCR?

1. Flexion
2. Radially Deviation of the hand at the wrist

18

Origin of FCR?

Medial epicondyle of the humerus via the common flexor tendon

19

Insertion of FCR?

base of the 2nd metacarpal

20

Innervation of FCR?

Median N.
(C6-C7)

21

Actions (2) of FCU

1. Flexion
2. Ulnar deviation of the hand at the wrist

22

Origin of FCU

Medial epicondyle of the humerus via the common flexor tendon

23

Insertion of FCU

Pisiform Bone

24

Innervation of FCU

Ulnar N. (C7-C8)

25

What part bones of the hand does the distal ulna articulate with?

none, it does not connect directly; there is a fibrocartilage disk that separates them

26

What bones (2) of the hand does the distal radius articulate with?

lunate
scaphoid

27

Which carpal bone does not have 4 articulating surfaces?

pisiform

28

This carpal bone is located by the distal styloid process of the radius and comes out during UD?

Scaphoid

29

This carpal bone is located near the capitate and can be seen with PROM when the hand is flexed?

Lunate

30

This carpal bone is pea shaped

Pisiform

31

This carpal bone is proximal to the 1st metacarpal joint and joint space

Trapezium

32

This carpal bone is the hardest to palpate in the hand?

Trapezoid

33

This carpal bone is in line with the middle finger and is known for its slight depression

Capitate

34

This carpal bone can be very tender and can be found near the palm of the hand

Hamate

35

These 4 carpal bones make up the "proximal" row of the hand

scaphoid
lunate
triquetrium
pisiform

36

These 4 carpal bones make up the "distal" row of the hand

trapezium
trapezoid
capitate
hamate

37

What 3 tendons make up the anatomical snuff box?

extensor pollicis longus
extensor pollicis brevis
abductor pollicis longus

38

the radiocarpal joint connects what structures?

distal end of radius to proximal surfaces of scaphoid and lunate

39

what 2 actions can occurs at the radiocarpal joint?

wrist flexion/extension
UD/RD

40

at the midcarpal joint, what three carpal bones articulate with the scaphoid?

trapezium
trapezoid
capitate

41

at the midcarpal joint, which carpal bone articulates with the lunate?

capitate

42

at the midcarpal joint, which carpal bone articulates with the triquetrium?

hamate

43

what 2 actions can occurs at the midcarpal joint?

wrist flexion/extension
UD/RD

44

What structures are connected at the ulnarcarpal articulation?

Distal radius and styloid process of the ulna to the Triquetrium of the hand

45

What structure functions to keep things together and absorb shock within the ulnarcarpal articulation?

Triangular fibrocartilage complex (TFCC)

46

What is the function of the extrinsic ligaments of the wrist?

connect radius, ulna, or metacarpal bones to the carpal bones

47

What is the function of the intrinsic ligaments of the wrist?

connect carpal bones only

48

Name the ligaments (3) that are responsible for keeps the radius and carpal bones connected

Volar radiocarpal ligaments (VRCL)
Dorsal radiocarpal ligaments (DRCL)
Radial collateral ligaments

49

4 ligaments that make up the VRCL?

radioscaphoid lunate
radiolunate
radioscaphoid capitate
radiotriquetrium

50

Which ligament of the the VCRL is the strongest?

radiotriquetrium

51

Which ligament is most important for motion and stability of the wrist (esp. during rotation?

VCRL

52

Which ligaments provide passive control for the radiocarpal motion?

radial and ulnar collateral ligaments

53

What structure forms the border of the carpal tunnel?

flexor retinaculum

54

What 5 structures make up the carpal tunnel?

FDT
FDS
FCR
FPL
Median N.

55

This provides the origin site for the thumb?

flexor retinaculum

56

This superficial ligament spans the carpal arch and maintains the arch on the palmar side of the wrist?

flexor retinaculum

57

What does the flexor retinaculum attach?

hook of hamate and pisiform to the scaphoid and trapezoid

58

What does the extensor retinaculum attach?

trapezium to the lateral side of radius

59

Radial N, APL, and EPB make up which compartment of the ER?

1st

60

ECU makes up which compartment of the ER?

6th

61

EDM makes up which compartment of the ER?

5th

62

ECRL and ECRB make up which compartment of the ER?

2nd

63

EPL makes up which compartment of the ER?

3rd

64

EI and EDC make up which compartment of the ER?

4th