Which structure is highlighted? epimysium perimysium endomysium

Highlighted structure is Epimysium.

Epimysium is the outermost layer of connective tissue that surrounds a muscle. It is composed of dense irregular connective tissue that is rich in collagen fibers.

The collagen fibers in the epimysium are arranged in a wavy pattern and are thicker than those found in the endomysium and perimysium, the other layers of connective tissue that surround and support the muscle. The wavy pattern of the collagen fibers allows for the muscle to stretch and contract without damaging the surrounding tissue.

Within the epimysium, there are also blood vessels and nerves that supply the muscle with oxygen and nutrients, as well as allow for communication between the muscle and the nervous system.

Overall, the epimysium plays an important role in protecting the muscle from damage, supporting the muscle during movement, and providing a pathway for communication between the muscle and the rest of the body.