APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -A muscle strain occurs when muscle fibers cannot cope with the demands placed on them by exercise overload and leads to tearing of the fibers. It is a contraction-induced injury in which muscle fibers tear due to extensive mechanical stress.

Detailed explanation-2: -After this inflammatory phase, the muscle begins to heal by regenerating muscle fibers from stem cells that live around the area of injury. However, a significant amount of scar tissue also forms where the muscle was injured. Over time, this scar tissue remodels, but the muscle tissue never fully regenerates.

Detailed explanation-3: -How do Tears in Muscles Happen? Muscle tears can happen when a muscle is overstretched to the point that the muscle is damaged. This can occur when a person is doing daily activities or heavy lifting as well as from sports activities. These tears can be partial or complete, depending on the severity of the injury.

Detailed explanation-4: -Exercise-induced muscle injury in humans frequently occurs after unaccustomed exercise, particularly if the exercise involves a large amount of eccentric (muscle lengthening) contractions. Direct measures of exercise-induced muscle damage include cellular and subcellular disturbances, particularly Z-line streaming.