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Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

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Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Receptors in the autonomic nervous system: (a) sympathetic division; (b) parasympathetic division Receptors in the autonomic nervous system: (a) sympathetic division; (b) parasympathetic division
Divisions of the nervous system Divisions of the nervous system
Procedures and Diagnostic Tests Related to the Male Reproductive System Procedures and Diagnostic Tests Related to the Male Reproductive System
A typical direct-injection system uses two pumps—one low-pressure electric pump in the fuel tank ... A typical direct-injection system uses two pumps—one low-pressure electric pump in the fuel tank ...
The Koeppen System The Koeppen System
Conduction system of the heart Conduction system of the heart
Video: Nervous pathway to the Neuromuscular (NMJ)

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