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Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

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There are 20 feet of blood vessels in each square inch of human skin.

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Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Diaphragm, the major muscle of breathing. Diaphragm, the major muscle of breathing.
Phylogenetic tree based on the distribution of 120 alleles in 42 populations from around the world, Phylogenetic tree based on the distribution of 120 alleles in 42 populations from around the world,
Functional brain imaging is the major method of cognitive neuroscience. This image—taken from the ... Functional brain imaging is the major method of cognitive neuroscience. This image—taken from the ...
Major muscles of the face and head. Major muscles of the face and head.
Reactions in assimilation of ammonia and major fates of the fixed nitrogen Reactions in assimilation of ammonia and major fates of the fixed nitrogen
Direct Development vs. Incomplete Metamorphosis Direct Development vs. Incomplete Metamorphosis
Video: Condensation and Hydrolysis Animation

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