Ulnar Nerve and Brachial Plexus Quiz

Ulnar nerve arises from which cord of brachial plexus?

• Lateral

• Posterior

• Medial

• Upper

Root value of ulnar nerve?

• C5-C6

• C7-C8

• C8-T1

• C6-T1

Ulnar nerve passes behind which bony structure at the elbow?

• Medial epicondyle

• Lateral epicondyle

• Olecranon

• Coronoid process

At the wrist, ulnar nerve passes through?

• Carpal tunnel

• Fibrous flexor sheath

• Fibro-osseous tunnel of Guyon's canal

• Extensor retinaculum

Ulnar nerve supplies which muscle in forearm?

• Pronator teres

• FCR

• FCU

• FDS

Ulnar nerve supplies how many lumbricals?

• 1st and 2nd

• 3rd and 4th

• All four

• None

Claw hand is a feature of injury to?

• Median nerve

• Radial nerve

• Ulnar nerve

• Axillary nerve

Biceps brachii is supplied by?

• Radial nerve

• Ulnar nerve

• Musculocutaneous nerve

• Axillary nerve

Action of biceps brachii?

• Flexor of hip

• Flexor of knee

• Flexor of elbow and supinator of forearm

• Extensor of elbow

Origin of short head of biceps?

• Coracoid process

• Acromion

• Supraglenoid tubercle

• Medial epicondyle