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Musculoskeletal System > Session 9 - Elbow And Anterior Forearm > Flashcards

Session 9 - Elbow And Anterior Forearm Flashcards

1
Q

What are the 2 articulations of the elbow joint?

A

Humeroulnar joint

Humeroradial joint

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2
Q

What is the humeroulnar joint?

A

Humerus and ulna

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3
Q

What is the humeroradial joint?

A

Humerus

Radius

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4
Q

What is the proximal radio ulnar joint?

A

Between side of radius and ulna

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5
Q

What is the function of medial epicondyle?

A

Attachment for flexor-pronator group of muscles in anterior forearm

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6
Q

What is the function of lateral epicondyle?

A

Attachment for extensor group in posterior forearm

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7
Q

Where does the radial collateral ligament attach to?

A

Lateral epicondyle of humerus

Annular ligament of radius

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8
Q

What is the function of radial collateral ligament?

A

Keep radius and capitellum close during pronation and supination

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9
Q

What does ulnar collateral ligament attach to?

A

Medial epicondyle of humerus and coronoid process

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10
Q

What are the 3 parts of the ulnar collateral ligament?

A

Anterior
Posterior
Inferior

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11
Q

What is the function of annular ligament?

A

Stabilize proximal radioulnar joint by forming collar around radial head

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12
Q

What are the movements of elbow joint?

A

Flexion and extension

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13
Q

What are the 3 major muscles that flex the elbow?

A

Brachialis
Biceps brachii
Brachioradialis

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14
Q

What is the major extensor of elbow joint?

A

Triceps brachii

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15
Q

What are the 2 actions of radio ulnar joints?

A

Supination and pronation

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16
Q

What muscle supinate the forearm when there is no resistance?

A

Supination

17
Q

What muscle supinate the forearm when there is resistance?

A

Biceps brachii

18
Q

What are the 2 muscles that does pronation?

A

Pronator quadratus and pronator teres

19
Q

What are 2 bursae for elbow joint?

A

Olecranon bursa and subtendinous bursa

20
Q

Where is the olecranon bursa?

A

In subcutaneous connective tissue overlying the olecranon

21
Q

Where is the subtendinous bursa?

A

Between triceps tendon and tip of olecranon

22
Q

What is the triangular fibrocartilage complex?

A

Fibrocartilaginous articular disc that binds radius and ulnar together and separates distal radioulnar joint from wrist joint

23
Q

What is interosseus membrane?

A

Fibrous joint between radius and ulnar

24
Q

What are 2 functions of interosseus membrane?

A

Keeps bones together during pronation and supination

Prevents proximal displacement of radius of force applied to outstretched hand

25
Q

How to remember muscles of anterior forearm?

A

4-1=3

Superficial 4
Intermediate 1
Deep 3

26
Q

How to remember 4 superficial muscles of anterior forearm?

A

From medial to lateral, pass fail pass fail

Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris

27
Q

What is common flexor origin?

A

Medial epicondyle of humerus

28
Q

What are the 2 heads of flexor carpi ulnaris?

A

Humeral head and ulnar head

29
Q

What is the action of flexor carpi ulnaris?

A

Flex and adduct wrist

30
Q

What is flexor carpi ulnaris innervated by?

A

Ulnar nerve

31
Q

What is the palmaris longus action?

A

Weak wrist flexor

32
Q

What is palmaris longus innervation?

A

Median nerve

33
Q

What are the 2 actions of flexor carpis radialis?

A

Flexion and abduction at wrist

34
Q

What is innervation of flexor carpi radialis?

A

Median nerve

35
Q

What is the pronator action?

A

Pronation

36
Q

What is pronator teres innervated by?

A

Median nerve

37
Q

What is the action of flexor digitorum superficialis?

A

Flex metacarpophalangeal joints and proximal inter phalangeal joints of 4 fingers

38
Q

What is flexor digitorum superficialis innervation?

A

Median nerve

Musculoskeletal System (9 decks)

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