Anatomy of Elbow, Wrist & Hand

Question 1

Bones of the Elbow

Answer 1

1. Distal Humerus
2. Proximal Radius & Ulna

Question 2

2 Articulations of the Elbow

Answer 2

1. Lateral condyle of humerus (capitulum) w/ Radius
2. Medial condyle of humerus (trochlea) w/ Ulna

Question 3

Lateral condyle of humerus is called

Answer 3

capitulum

Question 4

Medial condyle of humerus

Answer 4

trochlea

Question 5

The joint of the elbow is surrounded by a joint capsule w/ 3 supporting ligaments

Answer 5

1. Ulnar collateral ligament
2. Radial collateral ligament
3. Annular ligament

Question 6

Ligament that stabilizes & encircles the head of the radius

Answer 6

Annular ligament

Question 7

Motions of the elbow include

Answer 7

flexion & extension w/ pronation & supination

Question 8

envelops the elbow & superior radioulnar articulation & lubricates the deeper structures of the 2 joints

Answer 8

synovial membrane

Question 9

2 main bursae of the elbow

Answer 9

1. bicipital bursae
2. olecranon bursae

Question 10

cushions the tendon when the forearm is pronated

Answer 10

bicipital bursae

Question 11

forms a liquid cushion

Answer 11

olecranon bursae

Question 12

Muscle Flexion of the elbow

Answer 12

1. Biceps brachii
2. Brachialis
3. Brachioradialis
4. Pronator Teres

Question 13

Muscle Extension of the elbow

Answer 13

1. Triceps Brachii
2. Anconeus

Question 14

Supination of the elbow

Answer 14

1. Biceps brachii
2. Supinator
3. Brachioradialis

Question 15

Pronation of the elbow

Answer 15

1. Pronator Teres
2. Pronator Quadratus
3. Anconeus
4. Brachioradialis

Question 16

Blood supply of the elbow

Answer 16

brachial & medial arteries

Question 17

Nerve supply of the elbow

Answer 17

1. musculocutaneous nerve
2. Radial nerve
3. Median nerve

Question 18

Bones of the Forearm

Answer 18

1. Ulna
2. Radius

Question 19

larger at upper end than at its lower end

Answer 19

ulna

Question 20

thicker at its lower end than at its upper end

Answer 20

radius

Question 21

3 articulations of forearm

Answer 21

1. Superior radioulnar
2. Middle radioulnar
3. Distal radioulnar

Question 22

Pivot joint moving in a ring formed by the ulna & annular ligament

Answer 22

superior radioulnar

Question 23

shafts of bones ; held together by the oblique cord & interosseus membrane

provides a surface for muscle attachments

Answer 23

middle radioulnar

Question 24

Pivot joint formed by head of ulna w/ a small notch on radius

held together by anterior & posterior radioulnar ligaments

Answer 24

distal radioulnar

Question 25

Muscles of the Forearm anteriorly have the

Answer 25

flexors & pronators

Question 26

Muscles of the forearm posteriorly have the

Answer 26

extensors & supinators

Question 27

Blood supply of the forearm

Answer 27

brachial artery

Question 28

brachial artery of the forearm bld supply divides into

Answer 28

radial & ulnar arteries

Question 29

Nerve supply of the forearm flexor muscles

Answer 29

median nerve

Question 30

Nerve supply of the forearm extensor muscles

Answer 30

radial nerve

Question 31

Bones of Wrist & Hand

Answer 31

Distal aspect of radius & Ulnar (2) 8 Carpal Bones (radial to ulnar side) 5 metacarpals 14 phalanges 29 total bones

Question 32

Proximal row of carpal bones

Answer 32

1. Scaphoid (navicular) 2. Lunate 3. Triquetral 4. Pisiform

Question 33

Distal row of carpal bones

Answer 33

1. Trapezium 2. Trapezoid 3. Capitate 4. Hamate

Question 34

5 articulations of the wrist & hand

Answer 34

1. Wrist 2. Intercarpal Joints 3. Carpometacarpal joint 4. Metacarpophalangeal joint (MCP) 5. Interphalangeal joints

Question 35

radius & ulnar w/ 3 of 4 proximal row carpals: navicular, lunate & triquetral A condyloid joint

Answer 35

Wrist articulation

Question 36

condyloid joint permits

Answer 36

flexion, extension, radial, & ulnar deviation

Question 37

Ligaments of the wrist (4)

Answer 37

1. ulnar collateral 2. radial collateral 3. volar radiocarpal 4. dorsal radiocarpal

Question 38

stabilizing ligaments of the intercarpal joints

Answer 38

1. anterior 2. posterior 3. connecting interosseus ligaments

Question 39

one major ligament of the intercarpal joints

Answer 39

transverse carpal ligament (flexor retinaculum)

Question 40

Located on the volar aspect of the carpals & serves as the roof of the carpal tunnel

Answer 40

transverse carpal ligament (flexor retinaculum)

Question 41

Ligaments of the Metacarpophalangeal joint (MCP)

Answer 41

collateral & accessory volar ligaments

Question 42

interphalangeal joints consists of

Answer 42

proximal interphalangeal joint (PIP) distal interphalangeal joint (DIP)

Question 43

Blood supply of the wrist & hand

Answer 43

radial & ulnar arteries

Question 44

Nerve supply of the wrist & hand

Answer 44

ulnar nerve radial nerve median nerve

Question 45

Middle Deltoid action

Answer 45

ABDuction

Question 46

Anterior deltoid action

Answer 46

ABDuction shoulder flexion internal rotation

Question 47

posterior deltoid action

Answer 47

ABDuction shoulder extension external rotation

Question 48

Supraspinatus action

Answer 48

ABDuction

Question 49

Infraspinatus action

Answer 49

external rotation

Question 50

subscapularis action

Answer 50

shoulder extension internal rotation

Question 51

teres minor action

Answer 51

external rotation

Question 52

Latissimus dorsi action

Answer 52

shoulder extension internal rotation adduction

Question 53

teres major action

Answer 53

aDDuction shoulder extension internal rotation

Question 54

Pectoralis major action

Answer 54

ADDuction shoulder flexion internal rotation

Question 55

coracobrachialis action

Answer 55

adduction shoulder flexion

Question 56

long head of biceps action

Answer 56

shoulder flexion elbow flexion supination

Question 57

short head of biceps action

Answer 57

elbow flexion supination

Question 58

Long head of triceps

Answer 58

aDDuction shoulder extension elbow extension

Question 59

Lateral head of triceps

Answer 59

elbow extension

Question 60

Medial head of triceps

Answer 60

elbow extension

Question 61

brachialis

Answer 61

elbow flexion

Question 62

brachioradialis

Answer 62

elbow flexion assists in pronation & supination

Question 63

Pronator teres

Answer 63

elbow flexion pronation

Question 64

pronator quadratus

Answer 64

pronation

Question 65

anconeus

Answer 65

elbow extension pronation

Question 66

supinator

Answer 66

supination