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Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

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

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The FDA recognizes 118 routes of administration.

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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Convergent evolution for coloration Convergent evolution for coloration
(A) Scratch test; patient is exposed to allergens through a light scratch on the skin; (B) Positive (A) Scratch test; patient is exposed to allergens through a light scratch on the skin; (B) Positive
Pulse oximetry with the sensor probe applied securely, flush with skin, making sure that both sensor Pulse oximetry with the sensor probe applied securely, flush with skin, making sure that both sensor
Skin color variations Skin color variations
Induration measurement in a tuberculin skin test, a type IV hypersensitivity. Induration measurement in a tuberculin skin test, a type IV hypersensitivity.
Skin testing. Note the spot labeled H, which is the positive histamine control, and the spot labeled ... Skin testing. Note the spot labeled H, which is the positive histamine control, and the spot labeled ...
Video: baroreceptors

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