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Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

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According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

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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.

Traditional animal phylogeny based on body plans. Traditional animal phylogeny based on body plans.
Body plan of an echinoderm, as represented by a sea star. Body plan of an echinoderm, as represented by a sea star.
Dental Related Adverse Effects in Patients Undergoing Cancer Treatment Dental Related Adverse Effects in Patients Undergoing Cancer Treatment
Plan of an Etruscan Temple Plan of an Etruscan Temple
Organs of the alimentary canal and related accessory organs Organs of the alimentary canal and related accessory organs
Body plan of a lancelet Body plan of a lancelet
Video: HDL (high density lipoprotein)

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