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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

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The familiar sounds of your heart are made by the heart's valves as they open and close.

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The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Chest Configurations, Normal Adult, Barrel Chest, Pectus Carinatum, Pectus Excavatum Chest Configurations, Normal Adult, Barrel Chest, Pectus Carinatum, Pectus Excavatum
Normal Faults Common at divergent plate boundaries Normal Faults Common at divergent plate boundaries
Changes in the bronchioles during an asthma attack: (a) Normal bronchiole. (b) The inflammatory ... Changes in the bronchioles during an asthma attack: (a) Normal bronchiole. (b) The inflammatory ...
Effects of septal defects: (A) normal shunt; no cyanosis; (B) increased pressure in right ventricle; ... Effects of septal defects: (A) normal shunt; no cyanosis; (B) increased pressure in right ventricle; ...
Effects of septal defects: (A) normal shunt; no cyanosis; (B) increased pressure in right ventricle; ... Effects of septal defects: (A) normal shunt; no cyanosis; (B) increased pressure in right ventricle; ...
Platelets Platelets
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