The Universal Numbering System is a simplified method of identifying teeth that is approved and adopted by the American Dental Association. In the universal tooth numbering system, tooth number 1 is the patient's upper right third molar, on the right side of the mouth in the upper (maxillary) jaw. Numbering of teeth continues along the upper teeth toward the front and across to the last molar tooth back on the top left side (number 16).
Vacuole (plants). Quick look: A vacuole is a membrane-enclosed fluid filled sac found in the cells of plants including fungi. Vacuoles can be large organelles occupying between 30% and 90% of a cell by volume.Vacuoles appear to have three main functions, they:1  contribute to the rigidity of the plant using water to develop hydrostatic pressure. 2  store nutrient and non-nutrient chemicals.acuoles can be large organelles occupying between 30% and 90% of a cell by volume. Vacuoles appear to have three main functions, they: 1  contribute to the rigidity of the plant using water to develop hydrostatic pressure. 2  store nutrient and non-nutrient chemicals.
The membrane surrounding the vacuole is called the tonoplast. The fluid found inside the vacuole is called the cell sap. The cell sap includes mineral salts, sugars, organic acids, oxygen, carbon dioxide, pigments, waste and certain secondary metabolites. Water enters the vacuole by osmosis through the partially permeable tonoplast.