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Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

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IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

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The human body produces and destroys 15 million blood cells every second.

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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

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Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

Gas exchange occurs at the alveolar capillary membrane. Gas exchange occurs at the alveolar capillary membrane.
Normal right tympanic membrane Normal right tympanic membrane
Water Access Water Access
Eukaryotic signal transduction systems involving membrane receptors (1–5)/ second messengers (1-4) Eukaryotic signal transduction systems involving membrane receptors (1–5)/ second messengers (1-4)
The chemical structure of the water molecule facilitates life The chemical structure of the water molecule facilitates life
Your Body Is Mostly Water Your Body Is Mostly Water
Video: Contraction and Relaxation Animation

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