Male pelvic viscera and perineum

The video tutorial discusses the trapezius muscle, a triangular flat muscle of the shoulder girdle, supplied by the accessory nerve and cervical plexus. It is divided into three parts: descending, transverse, and ascending, each with specific origins and insertions. The trapezius stabilizes the shoulder blade, facilitates various movements, and affects head positioning. The video encourages interactive learning through Kenhub resources.

What are the functions of the trapezius muscle?

Explain the difference between unilateral and bilateral contraction of the trapezius muscle.