Desmosomes - patch between cells holding them together (uterus, heart, and epidermis). Gap Junctions - ring of transmembrane proteins form a water filled channel. Small solutes to pass from cell to cell. In Embryos, cardiac and smooth muscle. Tight Junctions - encircle the cell joining it to surrounding cells, prevents passage between cells. GI and urinary tracts
passief iontransport door kanaaltjes Gap Junctions are channels between cell membranes that allow ions and small molecules to pass directly from one cell to another. These channels are formed by membrane proteins called connexins. Six connexins in the cell membrane form a channel called a connexon. Connexons from two cells form a gap junction. Gap junctions permit electrical signals to pass directly from one cell to another.
Muscle tissue is elongated, stimulated to contract, and vascular (needs a lot of blood supply for energy). There are three types as depicted in the image: skeletal - striated, cylindrical, multi-nucleiated, and the biggest cell of the three types. Cardiac - striated, branched, 1-2 nuclei, has intercalated discs, and are the second biggest. Intercalated discs have desmosomes and gap junctions for molecule and liquid transport. Smooth - nonstriated, spindle shaped, 1 nuclei, and are the…
An electrostatic mechanism for the regulation of + mediated gap junction channels. Brad C. Bennett et al. Nature Communications Gap binding channels mediate intercellular signaling that is crucial in tissue development, homeostasis, and