Session 9 - Elbow And Anterior Forearm

Question 1

What are the 2 articulations of the elbow joint?

Answer 1

Humeroulnar joint

Humeroradial joint

Question 2

What is the humeroulnar joint?

Answer 2

Humerus and ulna

Question 3

What is the humeroradial joint?

Answer 3

Humerus

Radius

Question 4

What is the proximal radio ulnar joint?

Answer 4

Between side of radius and ulna

Question 5

What is the function of medial epicondyle?

Answer 5

Attachment for flexor-pronator group of muscles in anterior forearm

Question 6

What is the function of lateral epicondyle?

Answer 6

Attachment for extensor group in posterior forearm

Question 7

Where does the radial collateral ligament attach to?

Answer 7

Lateral epicondyle of humerus

Annular ligament of radius

Question 8

What is the function of radial collateral ligament?

Answer 8

Keep radius and capitellum close during pronation and supination

Question 9

What does ulnar collateral ligament attach to?

Answer 9

Medial epicondyle of humerus and coronoid process

Question 10

What are the 3 parts of the ulnar collateral ligament?

Answer 10

Anterior
Posterior
Inferior

Question 11

What is the function of annular ligament?

Answer 11

Stabilize proximal radioulnar joint by forming collar around radial head

Question 12

What are the movements of elbow joint?

Answer 12

Flexion and extension

Question 13

What are the 3 major muscles that flex the elbow?

Answer 13

Brachialis
Biceps brachii
Brachioradialis

Question 14

What is the major extensor of elbow joint?

Answer 14

Triceps brachii

Question 15

What are the 2 actions of radio ulnar joints?

Answer 15

Supination and pronation

Question 16

What muscle supinate the forearm when there is no resistance?

Answer 16

Supination

Question 17

What muscle supinate the forearm when there is resistance?

Answer 17

Biceps brachii

Question 18

What are the 2 muscles that does pronation?

Answer 18

Pronator quadratus and pronator teres

Question 19

What are 2 bursae for elbow joint?

Answer 19

Olecranon bursa and subtendinous bursa

Question 20

Where is the olecranon bursa?

Answer 20

In subcutaneous connective tissue overlying the olecranon

Question 21

Where is the subtendinous bursa?

Answer 21

Between triceps tendon and tip of olecranon

Question 22

What is the triangular fibrocartilage complex?

Answer 22

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

Question 23

What is interosseus membrane?

Answer 23

Fibrous joint between radius and ulnar

Question 24

What are 2 functions of interosseus membrane?

Answer 24

Keeps bones together during pronation and supination

Prevents proximal displacement of radius of force applied to outstretched hand

Question 25

How to remember muscles of anterior forearm?

Answer 25

4-1=3 Superficial 4 Intermediate 1 Deep 3

Question 26

How to remember 4 superficial muscles of anterior forearm?

Answer 26

From medial to lateral, pass fail pass fail Pronator teres Flexor carpi radialis Palmaris longus Flexor carpi ulnaris

Question 27

What is common flexor origin?

Answer 27

Medial epicondyle of humerus

Question 28

What are the 2 heads of flexor carpi ulnaris?

Answer 28

Humeral head and ulnar head

Question 29

What is the action of flexor carpi ulnaris?

Answer 29

Flex and adduct wrist

Question 30

What is flexor carpi ulnaris innervated by?

Answer 30

Ulnar nerve

Question 31

What is the palmaris longus action?

Answer 31

Weak wrist flexor

Question 32

What is palmaris longus innervation?

Answer 32

Median nerve

Question 33

What are the 2 actions of flexor carpis radialis?

Answer 33

Flexion and abduction at wrist

Question 34

What is innervation of flexor carpi radialis?

Answer 34

Median nerve

Question 35

What is the pronator action?

Answer 35

Pronation

Question 36

What is pronator teres innervated by?

Answer 36

Median nerve

Question 37

What is the action of flexor digitorum superficialis?

Answer 37

Flex metacarpophalangeal joints and proximal inter phalangeal joints of 4 fingers

Question 38

What is flexor digitorum superficialis innervation?

Answer 38

Median nerve