[BIOL 436] - Final Exam Guide - Everything you need to know! (107 pages long)
Document Summary
Form tight junctions (connections) so that cardiac cells don"t pull apart when contracting and transferring their force to fluid inside their ventricles. Protein that makes a base on the inside of cells and fibers extend to the outside of the cell. Fibers form strong adhesion between adjacent cells. Provide channel-like passageways between the two adjacent cells for electrical continuity and propagation throughout the heart. When open, allow for the passage of multiple small molecules from one cell to another. Movement is dictated by diffusion (high low concentration) Not a channel because channels only allow 1-2 molecules through (very. In general, ions and water will be able to move through gap junctions specific) Formed by the fusion of two or more cells, forming a giant cell . Example: heart muscle contains two syncytia: atrias and ventricles. Individual cells can behave as one whole cell. Originating in muscle tissue (rather than from nerve impulses)
