As with all cells, the cytoplasm is the fluid component of the cell, through which myriad proteins, ions and other molecules diffuse through, and within which organelles (like the nucleus) reside. The functions, therefore, are endless. read more
The structure of a muscle cell can be explained using a diagram labelling muscle filaments, myofibrils, sarcoplasm, cell nuclei (nuclei is the plural word for the singular nucleus), sarcolemma, and the fascicle of which the muscle fibre is part. read more