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Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

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The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

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The average adult has about 21 square feet of skin.

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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Normal glomerulus. Acute glomerulonephritis. Normal glomerulus. Acute glomerulonephritis.
Chronic renal failure Chronic renal failure
This graphic illustrates the original systems model of politics advanced by David Easton. Politics This graphic illustrates the original systems model of politics advanced by David Easton. Politics
Cardiovascular and renal control of blood pressure. Cardiovascular and renal control of blood pressure.
Gene expression consists of transcription of DNA into mRNA Gene expression consists of transcription of DNA into mRNA
A polysome consists of an mRNA molecule loaded with many ribosomes, all engaged in translation. A polysome consists of an mRNA molecule loaded with many ribosomes, all engaged in translation.
Video: Magnetic resonance imaging (MRI)

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