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.
A pilus is typically 7 to 8 nm in diameter, and several hundred pili can extend from the surface of a bacterial cell (see image to right). A fimbria (Latin, meaning fringe; plural: fimbriae) is a short pilus.They are used for attachment of the cell to a surface or other cells, and are either located at the poles of a cell, or are evenly spread over its entire surface. pilus (Latin for 'hair'; plural: pili) is a hairlike protein structure on the surface of a cell, especially Gram-negative bacteria.