Organizaci1n tisular

Apuntes

Organización tisular Dra. Carmen Tamariz A. Dr. Percy Olivera Gonzales FC-UNASAM TEJIDOS  Conjunto de células especializadas que cumplen una función determinada Diferenciación celular Tejidos animales EPITELIAL NERVIOSO MUSCULAR CONJUNTIVO GLANDULAR REVESTIMIENTO SOSTEN HEMATOPO- YETICO ENLACE FIBROSO LISO ESQUELETICO CARDIACO Cell-cell adhesion is mediated through membrane proteins called cell-adhesion molecules (CAMs). Many CAMs fall into one of four major families: the cadherins, the immunoglobulin (Ig) superfamily, the integrins, and the selectins. ECM components include proteoglycans, a unique type of glycoprotein (a protein with covalently attached sugars); collagens and other proteins that often form fibers; soluble multi-adhesive matrix proteins; and others. Multi-adhesive matrix proteins, such as fibronectin and laminin, are long, flexible molecules that contain multiple domains. They are responsible for binding various types of collagen, other matrix proteins, polysaccharides, and extracellular signaling molecules as well as adhesion receptors. These proteins are important organizers of the extracellular matrix. Through their interactions with adhesion receptors, th...