Common symptoms include: 1  Pain or tenderness in your face, jaw joint area, neck and shoulders, and in or around the ear when you chew, speak, or open your mouth wide. 2  Problems when you try to open your mouth wide. 3  Jaws that get stuck or lock in the open-or closed-mouth position.
Fimbriae: 1  Structure: Similar to pili, but shorter and more abundant on the cell surface. 2  Function: Adhesion of cells to surface and formation of pellicles (biofilms) containing thin sheets of cells on a liquid surface.
Summary of cell structure and function ï Many eukaryotic membrane-bound organelles are part of the endomembrane system, whose main function is the production and transport of biological macromolecules such as proteins, lipids, and some carbohydrates ï A cell has a cytoskeleton that helps it maintain its shape.