Nervus musculocutaneus

The video tutorial explores the nervus musculocutaneous, a mixed nerve of the arm. It originates from the lateral bundle of the brachial plexus, receiving fibers from C5 to C7 segments. The nerve travels through the axilla, piercing the coracobrachialis muscle, and runs between the biceps brachii and brachialis muscles. It innervates the biceps, brachialis, and coracobrachialis muscles. The nerve ends as the cutaneous nerve on the lateral forearm, providing sensory supply from the elbow to the wrist.

From which segments does the nervus musculocutaneous receive fibers?

• C5 to C7

• T2 to T4

• C1 to C3

• C8 to T1

Which muscle does the nervus musculocutaneous pierce in the upper arm?

• Triceps brachii

• Biceps brachii

• Deltoid

• Coracobrachialis

Where does the nervus musculocutaneous end in the forearm?

• Lateral side

• Medial side

• Posterior side

• Anterior side

What is the name of the terminal branch of the nervus musculocutaneous?

• Nervus cutaneus brachii posterior

• Nervus cutaneus antebrachii lateralis

• Nervus cutaneus antebrachii medialis

• Nervus cutaneus brachii anterior

Which part of the forearm does the nervus cutaneus antebrachii lateralis supply?

• Ulnar side

• Radial side

• Medial side

• Posterior side