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Did you know?

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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Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

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The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

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It is difficult to obtain enough calcium without consuming milk or other dairy foods.

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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Cross-section of wrist showing tendons and nerves involved in carpal tunnel syndrome. Cross-section of wrist showing tendons and nerves involved in carpal tunnel syndrome.
Raphael, Studies for The Alba Madonna (recto). Raphael, Studies for The Alba Madonna (recto).
Cranial Nerves and Functions Cranial Nerves and Functions
Cranial nerves and their target regions. (Sensory nerves are shown in blue; motor nerves, in red.) Cranial nerves and their target regions. (Sensory nerves are shown in blue; motor nerves, in red.)
Spinal nerves Spinal nerves
Illustration of the Spinal Nerves (a) Laterally and (b) Posteriorly. The Ganglia Are Detailed as Wel Illustration of the Spinal Nerves (a) Laterally and (b) Posteriorly. The Ganglia Are Detailed as Wel
Video: Conduction of action potentials

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