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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.

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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

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

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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Several species of squirrels have melanistic phases. In large parts of United States and Canada, the Several species of squirrels have melanistic phases. In large parts of United States and Canada, the
Diverse living organisms share common chemical features Diverse living organisms share common chemical features
All living organisms descended from a common ancestral cell All living organisms descended from a common ancestral cell
Common Bacterial Pathogens Common Bacterial Pathogens
Patterns of tissue injury secondary to gunshot wounds. Patterns of tissue injury secondary to gunshot wounds.
Three common eukaryotic promoter consensus sequence elements Three common eukaryotic promoter consensus sequence elements
Video: Origin of organelles Animation

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