Psychology 2720A/B Chapter Notes - Chapter 3: Blood Plasma, Integrin, Fibrocartilage

• School: Western University
• Department: Psychology
• Course: Psychology 2720A/B
• Professor: Prof

Document Summary

Tissue group of cells that have a common origin and function to carry out an activity. Tissues may be hard, semisolid or liquid. Cell junctions contact points between the plasma membranes of tissue cells. Transmembrane proteins fuse together the outer surfaces of adjacent plasma membranes. Plaque (dense layer of protein) attaches to membrane proteins and to microfilaments of the cytoskeleton. Cadherins insert into the plaque from the opposite side of the plasma membrane, partially crosses the intercellular space and connects to a cadherin of an adjacent cell. Anchor cells to one another: desmosomes. Contain plaque, have transmembrane glycoproteins that extend into the intercellular space between adjacent cell membranes and attach cells to one another. Plaque doesn"t attach to microfilaments, it attaches to elements of the cytoskeleton called intermediate filaments. Intermediate filaments extend from desmosomes on one side of the cell across the cytosol to desmosomes on the opposite side of the cell. Structural arrangement helps the stability of the cell.