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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

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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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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

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Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Elastic fibres are made of elastin, one type of structural protein found in the ECM of animal cells Elastic fibres are made of elastin, one type of structural protein found in the ECM of animal cells
Photograph of the flea that transmits Yersinia pestis to cause bubonic plague, called the oriental r Photograph of the flea that transmits Yersinia pestis to cause bubonic plague, called the oriental r
Glowing Base Of Tree Made By Arranging Leaves Glowing Base Of Tree Made By Arranging Leaves
Material safety data sheets (MSDS), now called safety data sheets (SDS), should be readily available ... Material safety data sheets (MSDS), now called safety data sheets (SDS), should be readily available ...
Typical timing marks. The numbers of the degrees are on the stationary plate and the notch is on ... Typical timing marks. The numbers of the degrees are on the stationary plate and the notch is on ...
Foods made with fat substitutes aren’t calorie free Foods made with fat substitutes aren’t calorie free
Video: Physiology of Asthma

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