Remember these key points: 1  Cell membranes or plasma membranes consist of a phospholipid bilayer with proteins embedded in the membrane. 2  Most of the functions of plasma membranes are handled by the proteins. 3  This arrangement of proteins and phospholipids is often called the fluid mosaic model for a cell membrane.. Cell membranes are based on lipid bilayer. Plasma membranes consist of a lipid bilayer with proteins embedded in the bilayer. The principle lipids are phospholipids. A phospholipid molecules has a hydrophilic head with a phosphate group as part of its structure and two hydrophobic tails.
Hypercalcemia is a condition in which you have too much calcium in your blood. Calcium performs important functions, such as helping to keep your bones healthy. However, too much of it can cause problems.
If blood calcium levels are too low, the body will break down bone and teeth to increase the blood calcium levels. If the blood levels are high, then the body uses the extra calcium to rebuild bone and teeth. The important functions of calcium in the body are too numerous to list entirely in this article. Calcium can bind to phosphate in the digestive system (preventing the phosphate from being absorbed), and it is sometimes used to help prevent or treat high phosphate levels in people with kidney disease.