BSC 300 Study Guide - Midterm Guide: Endoplasmic Reticulum, Epithelial–Mesenchymal Transition, Golgi Apparatus

• School: University of Alabama
• Department: Biological Sciences
• Course: BSC 300
• Professor: Yoder

Document Summary

Cells interact physically and chemically with one another and extracellular material to form defined tissues. Epithelial- sheets of closely packed cells tightly connected to one another and the basement membrane: form a protective barrier. Connective tissues- mostly of extracellular material secreted by the resident cells. Fibroblasts- largely autonomous, non-connected and motile: dermis of skin and cartilage. Glycocalyx- cell coat; covering that surrounds the cell membranes of epithelial cells: mediates cell-cell and cell-substratum interactions, facilitates the binding of important signaling molecules to cell surface. Extracellular matrix (ecm)- organized network beyond the plasma membrane: determines cell shape and activities. Involved in cell signaling as it regulates diffusion of ligands and their interactions with receptors. Basement membrane- specialized ecm under basal surface of epithelia: maintain cell attachment, provide signals for cell survival, separate distinct tissues within an organ, serves as substratum for cell migration, forms a barrier to macromolecules.