Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Kinesiology Exam Two > Musculature of the Hand > Flashcards

Musculature of the Hand Flashcards

1
Q

Name the 4 flexor muscles

A
  1. FDS: Flexor digitorum superficialis
  2. FDP: Flexor digitorum profundus
  3. FPL: Flexor pollicis longus
  4. APL: ABductor pollicis longus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Name 5 extensor muscles

A
  1. EPB: Extensor pollicis brevis
  2. EPL: Extensor pollicis longus
  3. EDC: Extensor digitorum communis
  4. EIP: Extensor indicis proprius
  5. EDQ, EDM: Extensor digiti minimi
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Name the 4 muscles found in the thenar imminence

A
  1. OP: opponens pollicis
  2. FPB: flexor pollicis brevis
  3. APB: ABductor pollicis brevis
  4. ADductor pollicis brevis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Name the 3 muscles of the hypothenar imminence

A
  1. ODM: opponens digit minimi
  2. ABductor digiti minimi
  3. Flexor digiti minimi
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How many lumbricals?

A

4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How many volar (palmar) interossei?

A

3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How many dorsal interossei?

A

4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

At the wrist, which tendons go under the flexor retinaculum in the ulnar bursa?

A

FDS and FDP, the divide into 4 tendons each

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the purpose of the flexor retinaculum?

A

tethers down the tendons to avoid bowstringing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What do bursas provide?

A

synovial fluid for tendon gliding to reduce friction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What enters hand in the radial bursa?

A

FPL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Which nerve also goes under the flexor retinaculum?

A

Median n.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

The ulnar bursa ends at mid palm, so the flexor tendons enter the fingers after passing through what?

A

A-1 pulley: Annular Pulley (another structure that tethers down the tendons)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What alternates with the annular pulleys?

A

cruciate pulleys (x shaped)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the purpose of the Cruciate pulleys?

A

fewer in # and weaker so it gives flexibility to the flexor system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Bowstringing of the fingers are due to congenital absence of what?

A

pulleys

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the only flexor of the DIP joint?

A

FDP (it can also flex the PIP joint)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What tethers down and helps the thumb to avoid bowstringing?

A

2 annular pulleys and an oblique pulley

19
Q

What is the only flexor of the PIP of the thumb?

A

FPL

20
Q

On the dorsum of the hand is another retinaculum. What is its purpose and what muscles enter the hand under it?

A

PURPOSE: tethers down tendons;
Muscles: all extrinsic extensors and thumb ABductor

21
Q

The extrensic extensors go through compartments/canals into the hand. What do these compartments do?

A

Help with smooth gliding of tendons (they are synovial)

22
Q

The ABductor pollicis longus ________ motion of opposition by moving thumb metacarpal anterior and lateral.

A

initiates

23
Q

Only extensor of the PIP of the thumb.

A

EPL (synergist with Extensor Pollicis Brevis to extend the MP joint of the thumb)

24
Q

Which muscle tendon proceeds past the MCP joint then divides into 3 parts.

A

EDC

Extensor Digitorum Communis expansion mechanism

25
Q

Name the 3 parts of the EDC expansion mechanism

A
  1. central tendon
  2. lateral bands
  3. lateral bands joining with retinacular ligaments
26
Q

What are the 2 kinds of retinacular ligaments?

A
  1. transverse

2. oblique

27
Q

What 3 muscles allows extension of the digits to occur?

A
  1. extensor digitorum
  2. digit II: also Extensor Indicis
  3. digit V: also Extensor digiti minimi
28
Q

What 3 injuries can be associated with the Extensor Mechanism?

A
  1. mallet finger
  2. swan neck
  3. boutonniere deformity
29
Q

What is the decription of mallet finger?
A. injury to terminal extensor tendon and presents as DIP flexion
B. DIP is pulled into flexion by the FDP and PIP hyperextends due to imbalance
C. presents as PIP flexion, lateral bands slip below asix of PIP joint

A

A. injury to terminal extensor tendon and presents as DIP flexion

30
Q

What is Boutonniere Deformity?
A. injury to terminal extensor tendon and presents as DIP flexion
B. DIP is pulled into flexion by the FDP and PIP hyperextends due to imbalance
C. presents as PIP flexion, lateral bands slip below asix of PIP joint

A

C. presents as PIP flexion, lateral bands slip below asix of PIP joint

31
Q

What is Swan Neck Deformity?
A. injury to terminal extensor tendon and presents as DIP flexion
B. DIP is pulled into flexion by the FDP and PIP hyperextends due to imbalance
C. presents as PIP flexion, lateral bands slip below asix of PIP joint

A

B. DIP is pulled into flexion by the FDP and PIP hyperextends due to imbalance

32
Q

TRUE or FALSE:

If mallet finger is not fixed, it can become a fixed deformity.

A

TRUE

33
Q

What can be a result of untreated mallet finger?

A

Swan Neck

34
Q

With a Swan Neck Deformity, does the lateral band slip ABOVE or BELOW the axis of flexion?

A

ABOVE

35
Q

With which deformity can the DIP be drawn into extension if the lateral bands become contracted?

A

Boutonniere Deformity

36
Q

Which intrinsic hand muscles do ABduction?

A

4 dorsal interossei

37
Q

Which intrinsic hand muscles do ADDuction?

A

3 volar interossei

38
Q

Which interossei contribute to IP extension of digits?

A

dorsal interossei (with lumbricals, EDC, and retinacular ligament)

39
Q

Which interossei help lumbricals to do MP flexion?

A

volar interossei

40
Q

Which muscles flex MCP joint and extends IP joints?

A

lumbricals

41
Q

The “Quad Group” that extends the IP joints consists of what?

A
  1. lumbricals
  2. interossei
  3. EDC
  4. OPL
42
Q

What flexes the MP joint of the thumb?

A

flexor pollicis brevis (FPB)

43
Q

What abducts thumbs perpendicular to the palm?

A

Abductor Pollicis Brevis

44
Q

What does the Opponens Pollicis muscle do?

A

opposes thumb metacarpal toward the middle of the palm and rotates it

Kinesiology Exam Two (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions