A thin sac-like covering, called the sarcolemma, surrounds the entire cell and just beneath this are a number of nuclei.
"Physiology and Hygiene for Secondary Schools"
Francis M. Walters, A.M.
This penetrates the sarcolemma and spreads out upon a kind of disk, having several nuclei, known as the end plate.
"Physiology and Hygiene for Secondary Schools"
Francis M. Walters, A.M.
Each cell has a well-defined nucleus, but the sarcolemma is absent.
"Physiology and Hygiene for Secondary Schools"
Francis M. Walters, A.M.