Transect
A single muscle cell is called a muscle fiber.
Each muscle fiber is also called a myofiber.
Myofibril
make more 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.
a muscle fiber
muscle fiber
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.
An individual skeletal muscle cell is referred to as a muscle fiber because of its elongated, thread-like shape that resembles a fiber. These muscle fibers are multi-nucleated and contain specialized structures called myofibrils, which are responsible for contraction. The term "fiber" underscores the cell's role in forming the overall muscle tissue, emphasizing its function and structural characteristics.