PPT-Tight Junctions, Desmosomes, and Gap Junctions in Animal Cells

By Sonia Trejo and Hailey Scoggins Tight Junctions At tight junctions the plasma membranes of neighboring cells are very tightly pressed against each Other Bound together by specific proteins purple. . by Dr. . Vani. Gupta . . Definition and Classification of cell junction. Cell junction is the connection between the neighbouring cells or the contact between the cell and extracellular matrix.. Compartmentation: Cells and Tissues. Golgi Complex. Membranes surrounded by vesicles. Protein modification. Protein packaging into secretory vesicles. Golgi Complex. Figure 3-18a. Vesicle. Lumen. (a). CELL JUNCTIONS. In certain tissues the membranes of adjacent cells may join and form a junction called a cell junction.. These are specialized areas of the cell membrane that provide contact between the cells.. Part 2. More o. rganelles & their functions. The cytoskeleton found throughout the cytosol in eukaryotic cells. It is used to move the cell, move organelles within the cell, provide support and structure, and cytoplasmic streaming (not prokaryotic cells). . Dr . Mahmood. S . Choudhery. , PhD. Assistant Professor. Advance Center of Research in Biomedical Sciences. Incharge. Tissue Engineering Laboratory, Mayo Hospital Lahore, Pakistan. King Edward Medical University, Lahore, Pakistan. Most cells synthesize and secrete materials that are external to the plasma membrane. These extracellular structures include:. Cell walls of plants. The extracellular matrix (ECM) of animal cells. Intercellular junctions. In: Bio 4H. Animal Cell . Junctions. In other words:. Things . that connect cells to other cells.. Type of connections or attachments that exist between adjacent (epithelial) cells.. Epithelia:. sheets of cells . presented by. Suman.Thota. M.Pharm . II-Semester. Department. of Industrial Pharmacy. UNIVERSITY COLLEGE OF PHARMACEUTICAL SCIENCES. KAKATIYA UNIVERSITY. WARANGAL. . . Plasma membrane. Regulates what goes in and out of the cell…. Outside of cell, there is the ECM – Extracellular matrix. . Glycoproteins. Collagen – forms strong fibers outside cells, 40% of protein in body. Topic. : Epithelial Tissues . Types and Functions. B.Ed. (. Hons. ) Secondary Semester IV Subject: Advance Biology II Course Title: Animal Form and Function–I. 2. . The ECM of animal cells • Animals cells lack the structure and support that a cell wall provides • Have an ECM instead that provides some of the same support. 3. . Components of the ECM • Cells secrete . Gap junctional intercellular communication is establishedwhen connexin proteins oligomerize into connexonhemichannels, which then pair at the cell surface withconnexons from neighboring cells to form Mrs. . Akula. . sowjanya. ,. Assistant professor,. M. Pharmacy (. Ph.D. ),. Department of pharmacology,. MLRIP,. Hyderabad. Department of pharmacology, MLRIP. Cell junctions. Course code (MBBS) . : Tissues 1. Course code (BMS) . : BCT-L4 . Tissues 1: Cellular Organisation of Tissues. Dr Peter Clark, NHLI, SAFB, SK. Multicellular organisms are made up of a wide variety of different cell types..