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 your blood calcium reading is high, your doctor will want to run further tests to find out the reason. So what are some causes of elevated blood calcium? In 90% of cases, high levels of calcium in the blood are caused by âsome form of primary hyperparathyroidism,â according to endocrinology experts at the UCLA Health System. If you or a family member has had a high blood calcium reading, you may wish to have your parathyroid hormone (PTH) level checked. The second most common cause â although it is uncommon â is a malignant cancer in the lung, breast, esophagus, mouth, tongue, lip, kidney, ovary, uterus and cervix, UCLA reports.