Muscles and nerves

Abstract

Although all the epithelial tissues replace their cells and maintain their mass by means of the same mechanism, or mechanisms, with only the chalone molecules being tissue-specific, there are two other groups of tissues that show marked variations on this basic theme. These are, first, the non-mitotic muscles and the non-mitotic neurones of the central nervous system, and second, the various connective tissues (Chapter 8). Altogether these tissues form the bulk of the body mass.