Musculus trapezius

The video tutorial explains the anatomy and functions of the trapezius muscle, a large muscle on the back. It is divided into three sections: pars descendens, pars transversa, and pars ascendens, each with distinct origin points and functions. The muscle is innervated by the accessory nerve and cervical plexus. The trapezius stabilizes the scapula and facilitates various movements, including scapular rotation and head tilting.

What are the three sections into which the trapezius muscle can be divided?

Describe the origin points of the pars descent of the trapezius muscle.

What is the function of the trapezius muscle in relation to the scapula?

How does unilateral contraction of the trapezius muscle affect the head?

Explain the role of the pass transversa in the movement of the scapula.