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Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Function and structure of aquaporin Function and structure of aquaporin
The nitrogen cycle. Numbers represent fluxes as 1012 g N per year (data from Schlesinger 1991, after The nitrogen cycle. Numbers represent fluxes as 1012 g N per year (data from Schlesinger 1991, after
Selected Drugs for Psoriasis and Related Disorders Selected Drugs for Psoriasis and Related Disorders
Electrical charge of the inner and outer regions of nerve cells Electrical charge of the inner and outer regions of nerve cells
Selected Specialty Supplements Selected Specialty Supplements
Range for Functions Range for Functions
Video: Introduction to Spirometry

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