Anatomy of the Upper Limb

Question 1

What type of joints are sternoclavicular, glenohumeral and acromioclavicular?

Answer 1

Acromioclavicular - plane

Glenohumeral - ball and socket

Sternoclavicular - saddle

Question 2

What type of joints are proximal/distal radioulnar and radiocarpal?

Answer 2

Proximal/distal radioulnar - pivot

Radiocarpal - ellipsoid

Question 3

During pronation, the radius moves over/under the ulna

Answer 3

Over

Question 4

What type of joint are MCP joints?

Answer 4

Condyloid

Question 5

What type of joint is the 1st CMC joint?

Answer 5

Saddle

Question 6

Identify the muscle and its nervous innervation

Answer 6

Question 7

Identify the muscles and their nervous innervation

Answer 7

Question 8

Identify the muscle and its nervous innervation

Answer 8

Question 9

Identify the muscle and its nervous innervation

Answer 9

Question 10

What are the four rotator cuff muscles?

Answer 10

Supraspinatus

Infraspinatus

Subscapularis

Teres minor

Question 11

Identify the muscles of the rotator cuff

Answer 11

Question 12

What muscles are found in the anterior arm?

Answer 12

Biceps brachii

Brachialis

Coracobrachialis

Question 13

Identify the muscles of the anterior arm

Answer 13

Question 14

What nerve innervates the anterior arm muscles?

Answer 14

Musculocutaneous nerve

Question 15

What actions do the anterior arm enable?

Answer 15

Flexion of arm and forearm

Question 16

The biceps brachii also enables which action?

Answer 16

Forearm supination

Question 17

Which muscle is found in the posterior arm?

Answer 17

Triceps brachii

Question 18

What nerve innervates the posterior arm?

Answer 18

Radial nerve

Question 19

What nerve innervates most of the anterior forearm?

Answer 19

Median nerve

Question 20

What actions does the posterior arm enable?

Answer 20

Extension of arm and forearm

Question 21

Which muscles in the anterior forearm are innervated by the ulnar nerve and NOT median?

Answer 21

Flexor carpi ulnaris

Medial half of flexor digitorum profundus

Question 22

What actions does the anterior forearm enable?

Answer 22

Wrist and digit flexion

Pronation, adduction and abduction of the wrist

Question 23

What nerve innervates the posterior compartment of the forearm?

Answer 23

Radial nerve

Question 24

What actions do the posterior forearm muscles enable?

Answer 24

Extension of wrist and digits

Supination, adduction and abduction of wrist

Question 25

The thenar eminence is made up of which muscles?

Answer 25

Abductor pollicis brevis Flexor pollicis brevis Opponens pollicis

Question 26

The hypothenar eminence is made up of which muscles?

Answer 26

Abductor digiti minimi Flexor digiti minimi brevis Opponens digit minimi

Question 27

The hypothenar/thenar eminence is affected by carpal tunnel syndrome

Answer 27

Thenar eminence

Question 28

What are the lumbricals attached to?

Answer 28

Tendons of flexor digitorum profundus

Question 29

The dorsal interossei enable adduction/abduction of digits and the palmar interossei enable adduction/abduction of digits

Answer 29

Dorsal = abduction Palmar = adduction

Question 30

The brachial plexus originates at what spinal roots?

Answer 30

C5-T1

Question 31

Cords of the brachial plexus travel around which artery?

Answer 31

Brachial artery

Question 32

The musculocutaneous nerve is a branch of which cord of the brachial plexus?

Answer 32

Lateral cord

Question 33

The posterior cord branches to give which nerves?

Answer 33

Axillary and radial

Question 34

The ulnar nerve is a branch of which cord?

Answer 34

Medial cord

Question 35

The median nerve is formed from branches of which cords?

Answer 35

Lateral and medial

Question 36

What is contained within the carpal tunnel?

Answer 36

Flexor digitorum superficialis (four tendons) Flexor digitorum profundus (four tendons) Flexor pollicis longus (one tendon) Median nerve

Question 37

Median nerve compression causes numbness in which digits?

Answer 37

Digits 1-3 and lateral half of digit 4

Question 38

In the superficial palmar arch, the radial/ulnar artery is dominant

Answer 38

UInar artery