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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

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In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

(A) The structure of a neuron, showing the dendrites, nerve cell body, and axon. (B) Photomicrograph (A) The structure of a neuron, showing the dendrites, nerve cell body, and axon. (B) Photomicrograph
Types of body movements. Types of body movements.
Techniques for applying local anesthesia: (a) topical; (b) nerve block; (c) infiltration; (d) ... Techniques for applying local anesthesia: (a) topical; (b) nerve block; (c) infiltration; (d) ...
Joint movements of the lower leg for recovery after strenuous exercise. Joint movements of the lower leg for recovery after strenuous exercise.
Testing motor function of cranial nerve VII - Show teeth Testing motor function of cranial nerve VII - Show teeth
A nerve cell (neuron) has extensions called dendrites A nerve cell (neuron) has extensions called dendrites
Video: DNA fingerprinting Animation

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