HISTOLOGICAL DIFFERENTIATION AND STEM CELLS. COVERING EPITHELIAL TISSUE: classification and specializations of apical, lateral and basal surface. Autoctonal and intrusive cells. Germinative layer. GLANDULAR EPITELIUM. CONNECTIVE TISSUES proper and special. EXTRACELLULAR MATRIX: fibers and ground substance. CELLS OF CONNECTIVE TISSUE: autoctonal and migrating cells. Organism defence processes. Loose, dense, reticular and adipose connective tissue. CARTILAGINOUS (hyaline, elastic and fibrous)and BONE TISSUE (spongy and compact). BLOOD: plasma and hematic cells. MUSCLE TISSUE: skeletal, cardiac and smooth. NERVOUS TISSUE: neurons and glia. Axon and fibers (myelinic and amyelinic). Synapses.