Innervation of forearm and hand muscles

The video tutorial provides a comprehensive overview of the innervation of the forearm and hand, focusing on the median, ulnar, and radial nerves. It details the motor and sensory distributions of these nerves, their paths through the brachial plexus, and their topographical relationships to the humerus. The tutorial also covers the specific muscles and areas of the hand each nerve innervates, including the median nerve's role in the carpal tunnel, the ulnar nerve's passage through Guyon's canal, and the radial nerve's function in the posterior forearm.

Which spinal nerve levels primarily contribute to the median nerve?

• C8 to T1

• C7 to T1

• C6 to T1

• C5 to T1

What is the function of the anterior interosseous nerve, a branch of the median nerve?

• Innervates the thenar muscles

• Innervates the hypothenar muscles

• Innervates the triceps

• Innervates the radial half of the flexor digitorum profundus

Through which structure does the ulnar nerve pass at the elbow?

• Cubital tunnel

• Radial tunnel

• Guyon's canal

• Carpal tunnel

Which muscles are innervated by the ulnar nerve in the hand?

• Forearm extensors

• Thenar muscles

• Hypothenar muscles

• Lumbricals 1 and 2

Which nerve passes through Guyon's canal in the hand?

• Median nerve

• Ulnar nerve

• Radial nerve

• Axillary nerve

What is the primary function of the radial nerve in the forearm?

• Innervates the flexor muscles

• Innervates the extensor muscles

• Innervates the thenar muscles

• Innervates the hypothenar muscles

Which nerve is responsible for the sensory distribution on the radial side of the posterior hand?

• Radial nerve

• Median nerve

• Musculocutaneous nerve

• Ulnar nerve