Bone
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  Bone



Bone

   Bone refers either to a hardened connective tissue or to one of the individual structures, or organs, into which it is formed, found in many animals. Bones support body structures, protect internal organs, and (in conjunction with muscles) facilitate movement; are also involved with cell formation, calcium metabolism, and mineral storage. The bones of an animal are, collectively, known as the skeleton.

RELATED TERMS
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Bone
Bone refers either to a hardened connective tissue or to one of the individual structures, or organs, into which it is formed, found in many animals. Bones support body structures, protect internal organs, and (in conjunction with muscles) facilitate movement; are also involved with cell formation, calcium metabolism, and mineral storage. The bones of an animal are, collectively, known as the skeleton.

Tissue
Biological tissue is a group of cells that perform a similar function.The study of tissues is known as histology, or, in connection with disease, histopathology.The classical tools for studying the tissues are the wax block, the tissue stain, and the optical microscope, though developments in electron microscopy, immunofluorescence, and frozen sections have all added to the sum of knowledge in the last couple of decades.

Cell
Fundamental structural unit of all life. The cell consists primarily of an outer plasma membrane, which separates it from the environment; the genetic material (DNA), which encodes heritable information for the maintainance of life; and the cytoplasm, a heterogeneous assemblage of ions, molecules, and fluid.

Calcium
Chemical element needed for healthy teeth, bones and nerves

Metabolism
The chemical activity that occurs in cells, releasing energy from nutrients, or using energy to create other substances, such as proteins.

Mineral
An inorganic compound needed by the body for good health, proper metabolic functioning, and disease prevention. Examples are calcium, magnesium, and iron.

Skeleton
The skeleton or skeletal system is the biological system providing support in living organisms.



SIMILAR TERMS
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Bronchi
The two respiratory tubes branching into the two lungs at the lower end of the trachea. They branch into progressively smaller passageways, the bronchioles, and finally reach the alveoli, the location where gas exchange occurs.

Bladder
A muscular triangular-shaped, hollow organ located in the pelvic cavity and supported by the pelvic floor muscles. The bladder stretches to store urine and contracts to release urine.

Bipolar disorder
Also known as manic-depressive illness, a mental illness involving episodes of serious mania and depression. The person's mood usually swings from overly "high" and irritable to sad and hopeless and then back again, with periods of normal mood in between. Periods of abnormal mood and associated physiologic changes last for at least 2 weeks.

Behcet's Disease


Bilirubin
The orange-yellow pigment of bile, the green fluid that aids in digestion and that is secreted by the liver. Bilirubin is formed mainly by hemoglobin breakdown at the end of red cell life and eventually most of it leaves the body in the feces. Two types are in the blood. Water insoluble or unconjugated bilirubin refers to the pigment before it reaches the liver. In the liver it is converted to the water-soluble or conjugated bilirubin which is excreted into the bile.

Bone

Blastocyst
The developmental stage of the fertilized ovum by the time it is ready to implant; formed from the morula and consists of an inner cell mass, an internal cavity, and an outer layer of cells (the trophoblast).

Bacteriostatic
Able to inhibit the growth and reproduction of at least some types of bacteria.

Birth control pill
Oral contraceptives are contraceptives which are taken orally and inhibit the body's fertility by chemical means. Female oral contraceptives have been on the market since the early 1960s. Male oral contraceptives remain a subject of research and development, and are not available widely (if at all) to the public. Studies continue of various alternatives, such as gossypol.

Breast enlargement pill
Breast enlargement pills have recently appeared in the market. Their purpose is to help women develop larger breasts.

Blackhead


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