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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

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The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.

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Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

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ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Shark skin under a microscope Shark skin under a microscope
Pigmented bands in nail of patient with dark skin Pigmented bands in nail of patient with dark skin
A crack in an exhaust manifold is often not visible. A crack in the exhaust manifold upstream of the ... A crack in an exhaust manifold is often not visible. A crack in the exhaust manifold upstream of the ...
Jaundice seen in the eyes and the skin of a patient with hepatitis A. Jaundice seen in the eyes and the skin of a patient with hepatitis A.
Skin layer diagram Skin layer diagram
The photo is a cross-section of thickened human skin The photo is a cross-section of thickened human skin
Video: Cavernous Sinus Larynx Middle Ear Orbit: Granulesm Animation

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