Which term best describes the upper section of a shirt that runs from shoulder to shoulder?

The term that best describes the upper section of a shirt that runs from shoulder to shoulder is "yoke." The yoke is an important part of shirt design, as it serves to provide structure and support to the garment. Typically located on the upper back area of the shirt, the yoke allows for better movement and fit, making it a crucial element in tailoring. It also plays a role in creating a clean and finished look, as it often connects the front and back sections of the shirt.

In contrast, while the collar, cap sleeve, and panel are all components of shirt construction, they refer to different parts with distinct functions. The collar encircles the neck, the cap sleeve covers the shoulder area but does not extend down the arm, and a panel can refer to any flat piece of fabric that makes up parts of the garment. Understanding the specific terminology associated with garment construction helps in identifying the role and placement of each component in apparel design.