What is the distal attachment of the trapezius?

The trapezius muscle has a distal attachment at the posterior border of the clavicle and the spine of the scapula. This muscle is quite significant as it plays a crucial role in various movements of the shoulder and neck.

The trapezius originates from the external occipital protuberance and the spinous processes of the cervical and thoracic vertebrae, and it inserts onto the superior nuchal line, the acromion process, and the spine of the scapula. The attachments at the posterior border of the clavicle help facilitate movements such as shoulder elevation and stabilization, which are essential for activities like lifting and reaching.

The other choices reflect different anatomical locations that are not the primary distal attachments of the trapezius, making them incorrect in this context. Understanding where the trapezius inserts is fundamental for comprehending its function in upper limb movement and stability.