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Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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Medication errors are more common among seriously ill patients than with those with minor conditions.

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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.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Exponential versus logistic growth. Exponential versus logistic growth.
Basic tissue types and structures of the alimentary canal. Basic tissue types and structures of the alimentary canal.
Growth of World Trade, 1870–2010 Growth of World Trade, 1870–2010
Epithelial vs. Connective Tissue Epithelial vs. Connective Tissue
Projectile Passing Through Tissue Projectile Passing Through Tissue
Early growth of the common bean (Phaseolus vulgaris), a typical eudicot. Early growth of the common bean (Phaseolus vulgaris), a typical eudicot.
Video: Oral Hygiene & Braces Animation

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