Читать книгу Bovine Reproduction - Группа авторов - Страница 60

SC in association with peritubular myoid cells secrete basement membrane of the ST [40]. The cytoskeleton of SC participates in organizing and shaping the ST [41]. Major components of SC cytoskeleton are actin, intermediate filaments, and microtubules, and each has a unique distribution pattern according to different stages of the cycle of the seminiferous epithelium [42]. The functions of SC cytoskeleton include (i) maintaining SC shape; (ii) positioning and transporting organelles within the cell; (iii) forming and stabilizing SC membrane at sites of cell–cell and cell–extracellular matrix contact; (iv) positioning, anchoring, and aiding in the movement of developing germ cells; and (v) involvement in the release of mature spermatids from the ST during spermiation [34].