The connective tissue that surrounds each muscle fiber is called the endomysium.
The endomysium is a delicate layer of connective tissue that envelops individual muscle fibers (muscle cells). Its primary role is to provide structural support and to help maintain the integrity of the muscle fibers during contraction. Additionally, the endomysium contains capillaries and nerves that supply the muscle fibers, playing a crucial role in their function and health. Understanding the role of the endomysium is important when studying muscle physiology and the overall mechanics of muscle movement.