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Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

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Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

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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.

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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

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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.

The path of sound waves through the outer, middle, and inner ear. The path of sound waves through the outer, middle, and inner ear.
Midway Island, an inhospitable atoll acquired in 1867, was valuable as a military base located midwa Midway Island, an inhospitable atoll acquired in 1867, was valuable as a military base located midwa
This pediatric growth chart tracks the height and weight for girls ages 2–20. This pediatric growth chart tracks the height and weight for girls ages 2–20.
Moderate hash may or may not be significant for diagnosis. Moderate hash may or may not be significant for diagnosis.
Man-in-the-middle attack Man-in-the-middle attack
Middle eastern kobab Middle eastern kobab
Video: Hemodynamics Animation

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