Brainscape's Knowledge GenomeTM

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


See full index

Anatomy - MSK (UL) > 7: Contents Of Forearm > Flashcards

7: Contents Of Forearm Flashcards

1
Q

Anterior compartment
(Muscle actions & innervation)

A

Flexors and pronators are present in the anterior compartment, mainly supplied by the median nerve

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

Posterior compartment
(Muscle actions & innervation)

A

Extensors and supinatorsare present in the posterior compartment, supplied by the radial nerve

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

As the deep fascia is attached to bones and joints, usually infections are confined to the compartments, except ……..?

A

except that from the flexor compartment which is continuous with that of the palm through the carpal tunnel (canal), the infection can spread to the palm and vice versa

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

Neurovascular bundle is found in more than one place in the ….. compartment. It’s important when you operate in this area.

A

Anterior

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

Muscles of Anterior Compartment (superficial layer)

A

1- Pronator teres
2- Felxor carpi radialis
3- Palmaris longus
4- Flexor carpi ulnaris

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

Muscles of Anterior Compartment (intermediate layer)

A

Flexor digitorum superficialis

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

Muscles of Anterior Compartment (deep layer)

A

1- Flexor digitorum profundus
2- Flexor pollicis longus
3- Pronator quadratus

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

Muscles of Posterior Compartment (superficial)

A

1- brachioradialis
2- extensor carpi radialis longus
3- extensor carpi radialis brevis
4- extensor digitorum
5- Extensor digiti minimi
6- extensor carpi ulnaris
7- anconeus

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

Muscles of Posterior Compartment (deep)

A

1- supinator
2- Abductor pollicis longus
3- extensor pollicis longus
4- Extensor pollicis brevis
5- Extensor indicis

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

Pronator teres
A. Origin
B. Insertion
C. Action

A

A. humerus & ulna
B. middle of radius
C. pronates and flexes the forearm

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

Felxor carpi radialis
A. Origin
B. Insertion
C. Action

A

A. CFO (medial epicondyle)
B. second metacarpal
C. flexes and abducts the wrist joint

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

Palmaris longus
A. Origin
B. Insertion
C. Action

A

A. CFO (Medial epicondyle)
B. palmar aponeurosis
C. Not mentioned (absence in 10% of people)

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

Flexor carpi ulnaris
A. Origin
B. Insertion
C. Action

A

A. CFO & ulna
B. pisiform, hamate and 5th
metacarpal
C. flexes and adducts the wrist joint

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

Flexor digitorum superficialis
A. Origin
B. Insertion
C. Action

A

A. From humerus, ulna and radius
B. middle phalanges of medial four fingers
C. flexion of middle phalanges at PIP joints and at MCP joints

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

Flexor digitorum profundus
A. Origin
B. Insertion
C. Action

A

A. Ulna & interosseous membrane
B. bases of distal phalanges of 2 to 5 fingers
C. Flexes distal phalanges

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

Flexor pollicis longus
A. Origin
B. Insertion
C. Action

A

A. Anterior surfaces of radius & interosseous membrane
B. Base of distal phalanx of thumb
C. Flexes distal phalanx of thumb

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

Pronator quadratus
A. Origin
B. Insertion
C. Action

A

A. distal part of ulna
B. Distal part of radius
C. Binds radius and ulna and pronates the forearm

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

Brachioradialis
A. Origin
B. Insertion
C. Action

A

A. Lateral supracondylar ridge
B. Distal end of radius
C. Flexor of forearm especially when the forearm is in mid-prone position

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Extensor carpi radialis longus
A. Origin
B. Insertion
C. Action

A

A. lateral supracondylar ridge
B. base of second metacarpal
C. extends and abducts wrist joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Extensor carpi radialis brevis
A. Origin
B. Insertion
C. Action

A

A. CEO (lateral epicondyle)
B. base of 3rd metacarpal
C. extends and abducts wrist joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Extensor digitorum
A. Origin
B. Insertion
C. Action

A

A. CEO (lateral epicondyle)
B. middle phalanges of medial for fingers
C. extends medial four fingers at MCP & IP’s joints

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Extensor digiti minimi
A. Origin
B. Insertion
C. Action

A

A. CEO (lateral epicondyle)
B. 5th digit
C. similar to ED (extends at MCP and IP)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Extensor carpi ulnaris
A. Origin
B. Insertion
C. Action

A

A. CEO & posterior border of ulna
B. base of 5th MCP joint
C. extends and adducts the wrist joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Anconeus
A. Origin
B. Insertion
C. Action

A

A. CEO
B. posterior surface of ulna
C. weak extensor of elbow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Supinator
A. Origin
B. Insertion
C. Action

A

A. CEO & ulna
B. proximal third of radius
C. supinates the forearm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Abductor pollicis longus
A. Origin
B. Insertion
C. Action

A

A. proximal parts of radius, ulna and interosseous membrane
B. base of first metacarpal
C. Abducts and extends the thumb

27
Q

Extensor pollicis longus
A. Origin
B. Insertion
C. Action

A

A. middle third of ulna and interosseous membrane
B. Base of distal phalanx of thumb
C. extends distal phalanx of thumb

28
Q

Extensor pollicis brevis
A. Origin
B. Insertion
C. Action

A

A. distal third of radius and interosseous membrane
B. Base of proximal phalanx of thumb
C. Extends proximal phalanx of thumb

29
Q

Extensor indicis
A. Origin
B. Insertion
C. Action

A

A. distal third of ulna and interosseous membrane
B. dorsal digital expansion of index finger
C. extends the second finger

30
Q

Chief gripping muscle

A

FDP (Flexor digitorum profundus )

31
Q

Anterior interosseous nerve is a branch of ..?

A

Median nerve

32
Q

What does the median nerve innervate in the forearm

A

flexor muscles innervated by the median nerve (except one and a half: FCU & FDP medial part)

33
Q

Posterior interosseous nerve is deep branch of …?

A

Radial nerve

34
Q

Muscles supplied by radial nerve?

A

Extensor carpi radialis longus & Brachioradialis (posterior compartment)

35
Q

Muscles supplied by posterior interosseous nerve (deep branch of radial)?

A

posterior compartment muscles except: Extensor carpi radialis longus & Brachioradialis

36
Q

Ulnar nerve supply?

A

1.5 muscles supplied by ulnar
1 = Flexor carpi ulnaris
0.5 = medial part of flexor digitorum profundus

37
Q

Deep fascial band on the back of the wrist which holds the extensor tendons is called

A

Extensor retinaculum

38
Q

Extensor retinaculum lateral & medial attachments

A

Laterally to inferior end of radius
Medially to styloid process of ulna, triquetral and pisiform

39
Q

Function of extensor retinaculum?

A

prevents bowstringing of tendons during extension of wrist

40
Q

six osseofascial compartment: mention tendons in each in order

A

1: abductor pollicis longus & extensor pollicis brevis
2: extensor carpi radialis (longus & brevis)
3: extensor pollicis longus
4: Extensor digitorum & extensor indicis
5: extensor digiti minimi
6: extensor carpi ulnaris

41
Q

Cubital fossa boundaries
A. Lateral
B. Medial
C. Base
D. Apex

A

A. Lateral = brachioradialis
B. Medial = pronator teres
C. Base = imaginary line passing through epicondyles
D. Meeting points of A & B

42
Q

Cubital fossa (roof & floor)

A

Roof = roof is formed by the skin, superficial & deep fascia + bicipital aponeurosis
Floor = brachialis and supinator

43
Q

contents of cubital fossa (medial to lateral side)

A

median nerve, termination of brachial artery, tendon of biceps, radial nerve

44
Q

Biceps reflex (tests what? How performed?)

A
  • Biceps reflex: a deep tendon reflex-elicited to test musculocutaneous nerve (C5, C6) or the same spinal cord segments
  • The examiner’s thumb is firmly placed on the biceps tendon and the reflex hammer is tapped at the base of the nail bed
    (Normal reflex is jerk-like flexion of elbow)
45
Q

Neurovascular Bundle (name 2 arteries, 2 veins & 3 nerves) of forearm

A

Artery = radial & ulnar
Vein = cephalic and basilic (superficial) & radial, ulnar, and interosseous veins (deep)
Nerve = median, ulnar, radial

46
Q

What interconnects the cephalic and basilic veins?

A

Median cubital veins

47
Q

What are perforating veins

A

communicate the superficial veins with the deep veins

48
Q

Deep veins proximally join the ….(a)…, which in turn join the …(b)… in the axilla

A

a = brachial vein
b = axillary vein

49
Q

Ulnar artery (branches? Supplies what?)

A
50
Q

Radial artery (branches? Supplies what?)

A
51
Q

Which artery gives a branch that enters the hand into the anatomical snuff box

A

Radial artery

52
Q

Which muscle is responsible for:
- flexion at PIP joint
- flexion at DIP joint

A

PIP = FDS (superficialis)
DIP = FDP (profundus)

53
Q

This muscle causes flexion at MCP joint

A

Flexor digitorum superficialis

54
Q

This muscle is absent in 10% of people

A

Palmaris longus

55
Q

1- main nerve of forearm ?
2- main nerve of hand ?

A

1- median nerve
2- ulnar nerve

56
Q

What happens in case of injury to: (name the deformity)
1- radial nerve?
2- ulnar nerve?
3- median nerve?

A

1- wrist drop
2- claw hand
3- ape hand

57
Q

Patient presented with pain over the lateral epicondyle which radiates over the posterior surface of forearm when open a door or lift a glass. what’s your diagnosis?

A

Tennis elbow/elbow tendinitis/tendinosis/lateral epicondylitis

58
Q

Causes of Tennis elbow

A
59
Q

In fractures of radius above insertion of pronator teres muscle, what’s the orientation of the proximal and distal fragments?

A
60
Q

In fractures of middle or distal radius that are distal to insertion of
pronator teres muscle what happens to proximal and distal fragments?

A
61
Q

What’s a common type of ulna fracture. What is seen on xray?

A
62
Q

Fractures of distal part of radius (mention two types)

A
  • distal part displaced dorsally = colles fracture (posterior)
  • distal part displaced ventrally = smiths fracture (anterior)
63
Q

Add mcqs ‼️

A

Anatomy - MSK (UL) (17 decks)

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