Muscles that are better at providing long term physical activity
A single muscle cell is called a muscle fiber.
Each muscle fiber is also called a myofiber.
Myofibril
make more muscle fiber
muscle fiber
a muscle fiber
The smaller fiber in a muscle fiber is called a myofibril. A band of tissue that connects bone to bone is called a ligament.
The sacromere with the proteins actin and myosin allow the muscle cell (fiber) to contract.
This question is confusing. Are you asking if you see only a relaxed muscle fiber in EMs? Yes, you would only see that, not a contracted muscle fiber. The preparation could only be of a relaxed fiber.
A whole muscle is the whole muscle while a muscle fiber is part of a muscle. I'm not sure if I'm correct though, so check with some different sources.
The connective tissue covering that encloses the sarcolemma of an individual muscle fiber is called endomysium. It surrounds each muscle fiber and provides support and protection to the muscle cells.
Smooth Muscle Fiber