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Fundementals Musculoskeletal > Week 9 > Flashcards

Week 9 Flashcards

1
Q

What two joints does the wrist consist of?

A

Radiocarpal joint

Midcarpal joint

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2
Q

What joint motions can the wrist perform?

A

Flexion (90 degrees)

Neutral

Extension (70 degrees)

Radial deviation (25 degrees)

Ulnar deviation (30 degrees)

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3
Q

What are the carpal bones?

A

Scaphoid

Lunate

Triquetrum

Pisiform

Hamate

Capitate

Trapezium

Trapezoid

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4
Q

What are the muscles in the superficial layer of the anterior forearm

A

1) Flexor carpi radialis

2) Palmaris longus

3) Flexor carpi ulnaris

4) Pronator teres

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5
Q

What are the muscles in the posterior forearm?

A

1) Extensor carpi radialis longus

2) Extensor carpi radialis brevis

3) Extensor carpi ulnaris

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6
Q

What is the origin of the Flexor carpi ulnaris?

A

Medial epicondyle

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7
Q

What is the insertion of the Flexor carpi ulnaris?

A
  • Base of 5th metacarpal
  • Pisiform
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8
Q

What action does the Flexor carpi ulnaris perform?

A

Wrist flexion

Ulnar deviation

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9
Q

What is the origin of the Flexor carpi radialis?

A

Medial epicondyle

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10
Q

What is the insertion of the Flexor carpi radialis?

A

Base of 2nd and 3rd metacarpals

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11
Q

What action does the Flexor carpi radialis perform?

A

Wrist flexion

Radial deviation

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12
Q

What is the origin of the Palmaris Longus?

A

Medial epicondyle

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13
Q

What is the insertion of the Palmaris Longus?

A

Palmar fascia

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14
Q

What action does the Palmaris Longus perform?

A

Assists in wrist flexion

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15
Q

What is the origin of the Extensor Carpi Radialis Longus?

A

Just above lateral epicondyle (supracondylar ridge)

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16
Q

What is the insertion of the extensor Carpi Radialis Longus?

A

Base of 2nd metacarpal

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17
Q

What action does the Extensor Carpi Radialis Longus perform?

A

Wrist extension

Radial deviation

Assists elbow extension

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18
Q

What is the origin of the Extensor carpi radialis brevis?

A

Lateral epicondyle

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19
Q

What is the insertion of the Extensor carpi radialis brevis?

A

Base of 3rd metacarpal

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20
Q

What action does the Extensor carpi radialis brevis perform?

A

Prime mover of wrist extension

Assists in elbow extension

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21
Q

What is the origin of the Extensor carpi ulnaris?

A

Lateral epicondyle

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22
Q

What is the insertion of the Extensor carpi ulnaris?

A

Base of 5th metacarpal

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23
Q

What action does the Extensor carpi ulnaris perform?

A

Prime mover of wrist extension

Prime mover of ulnar deviation

Assists in elbow extension

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24
Q

What are the extensors of the wrist

–> remembering that the extensors are more posterior (in anatomical position)

A

Extensor carpi radialis longus (ECRL)

Extensor carpi radialis brevis (ECRB)

Extensor carpi ulnaris (ECU)

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25
Q

What is the function of the extensors?

A

Keep tendons in alignment and prevent bowstringing

26
Q

What does

1) phalanges

2) metacarpals

3) carpals

mean?

A

Phalanges: fingers

Metacarpals: palm of the hand

Carpals: wrist bones

27
Q

What does

1) DIP’s

2) PIP’s

3) IP’s

4) MCP’s

5) CMC’s

mean?

A

DIP’s = distal interphalangeal joints

PIP’s = proximal interphalangeal joints

IP’s = interphalangeal joints

MCP’s = metacarpophalangeal joints

CMC’s carpometacarpal joints

27
Q

What joint’s make up the elbow?

A

1) Elbow joint
–> articulation between the humerus and ulna
–> Uniaxial - allows flexion and extension

2) Radioulnar joint
–> articulation between radius and ulna
–> Uniaxial - allows pronation and supination
–> there are 2, a proximal and a distal radioulnar joint

28
Q

True or false: the elbow joint and radioulnar joint are biaxial

A

False

–> they are both uniaxial

29
Q

True or false: the ulna moves around the radius

A

False

–> the ulna does not move

–> distal end of radius rotates around the distal end of ulna

30
Q

True or false: Ulna is on the medial side of the forearm and the radius is on the lateral side

A

True

31
Q

True or false: the ulna articulates with the trochlea

A

True

32
Q

What are the 6 landmarks of the humerus?

A

1) Trochlea
2) Capitulum
3) Medial epicondyle
4) Lateral epicondyle
5) Lateral supracondylar ridge
6) Olecranon fossa

33
Q

What are the 7 key landmarks of the ulna?

A

1) Olecranon process
2) Trochlear notch
3) Coronoid process
4) Radial notch
5) Ulnar tuberosity
6) Styloid process
7) Head

34
Q

What are the 8 key muscles of the elbow and forearm?

A

1) Brachialis
2) Biceps brachii
3) Brachioradialis
4) Triceps brachii
5) Anconeus
6) Pronator teres
7) Pronator quadratus
8) Supinator

35
Q

General information about the brachialis

A

–> found deep to the biceps brachii

–> plays no role in supination/pronation

36
Q

True or false: the brachialis is found superficial to the biceps brachii

A

False

–> found deep to biceps brachii

37
Q

True or false: the brachialis does not supinate or pronate the arm

A

True

38
Q

Origin of the brachialis

A

Humerus

–> half way down shaft

39
Q

Insertion of the brachialis

A

Ulna

–> coronoid process
–> ulnar tuberosity

40
Q

What action does the brachialis perform?

A

Elbow flexion

41
Q

True or false: the biceps brachii has one head and one shaft

A

False

–> biceps brachii has two heads = both attach to the scapula

42
Q

Origin of the biceps brachii

A

Scapula
–> supraglenoid tubercle
–> coracoid process

43
Q

Insertion of the biceps brachii

A

Radius
–> radial tuberosity

44
Q

What action does the biceps brachii perform?

A

1) Elbow flexion

2) Supination

45
Q

Origin of the brachioradialis

A

Distal humerus

–> lateral supracondylar ridge

46
Q

Insertion of the brachioradialis

A

Distal radius

–> styloid process

47
Q

What action does the brachioraialis perform?

A

1) Elbow flexion

2) Helps to pronate and supinate back to neutral position

48
Q

True or false: the triceps brachii has 2 heads

A

False

–> has three heads = long, lateral, and medial head

49
Q

Origin of the triceps brachii

A

1) Scapula
–> long head/infraglenoid tubercle

2) Humerus
–> medial and lateral heads

50
Q

Insertion of the triceps brachii

A

Ulna
–> olecranon process

51
Q

What action does the triceps brachii perform?

A

Elbow extension

52
Q

What is the anconeus?

A

a muscle that is small and helps the triceps extend the elbow

53
Q

What is the pronator teres?

A

Superficial muscle that crosses the elbow, but is covered by the brachioradialis at distal end

54
Q

Origin of the pronator teres muscle

A

Medial epicondyle

55
Q

Insertion of the pronator teres

A

Mid radius

56
Q

What action does the pronator teres perform?

A

Pronates forearm

Assists in elbow flexion

57
Q

Origin of the pronator quadratus muscle

A

Distal ulna

58
Q

Insertion of the pronator quadratus muscle

A

Distal radius

59
Q

What action does the pronator quadratus muscle perform?

A

Pronates forearm

60
Q

What ligaments are associated with the elbow joint?

A

1) Medial collateral ligament

2) Lateral collateral ligament

61
Q

What ligaments and other structures are associated with the radioulnar joint?

A

1) Annular ligament

2) Interosseus membrane

Fundementals Musculoskeletal (9 decks)

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