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Calcium Definition Calcium is a soft, silver-white, metallic chemical element, one of the alkaline-earth metals, found in limestone, marble, chalk, etc., always in combination: it…

Classes and Uses of Minerals Introduction Minerals are naturally-occurring inorganic substances with a definite and predictable chemical composition and physical properties. A mineral is an…

Minerals Definition Minerals are defined as solid, inorganic, naturally occurring substances with a definite chemical formula and general structure. Almost all chemical elements in the…

Bone Resorption Definition Bone Resorption is the breakdown and absorption of old bone. The process is completed on a local level by bone resorbing cells…

Bipolar disorder is a brain disorder that causes strange shifts in temper, energy, activity levels, and the aptitude to carry out day-to-day tasks. It was…

Vitamin D Deficiency Introduction Vitamin D is a fat-soluble vitamin that is naturally present in very few foods, added to others, and available as a…

Vitamin D Definition Vitamin D is a steroid vitamin, which promotes the intestinal absorption and metabolism of calcium and phosphorus. Under normal conditions of sunlight…

Thermal Equilibrium Definition Thermal Equilibrium is when two objects are at the same temperature. Two objects at different temperatures will reach thermal equilibrium because heat…

Radium Definition Radium is the chemical element of atomic number 88 and the element symbol is Ra, a rare radioactive metal of the alkaline earth…

About Abdominal Pain Definition Abdominal Pain or pain in the belly is the reason for around 5% of all emergency department visits. It is a…

Structure and Function of Thyroid Gland Introduction Thyroid Gland is a two-lobed gland that wraps around the trachea and is located at the base of…

Thyroid Gland Definition Thyroid Gland or also called Thyroid is situated at the front of the throat, below the larynx, and comprises two lobes that…