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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

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In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

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It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

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Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Range of Motion of the Wrist and Hand Joints, Hyperextension and Flexion of the Wrist Range of Motion of the Wrist and Hand Joints, Hyperextension and Flexion of the Wrist
Range of Motion of the Ankle and Foot, Plantar Flexion and Dorsiflexion Range of Motion of the Ankle and Foot, Plantar Flexion and Dorsiflexion
Mensuration: A goniometer is used to measure the range of motion of a joint. Mensuration: A goniometer is used to measure the range of motion of a joint.
How to find the domain and range of the trigonometric function, sine, cosine, and tangent How to find the domain and range of the trigonometric function, sine, cosine, and tangent
How to determine if a table of values represents a function How to determine if a table of values represents a function
IQ scores form what mathematicians call a normal distribution "bell curve" IQ scores form what mathematicians call a normal distribution "bell curve"
Video: Metabolic Rate, Heat and Thermoregulation - response to heat and cold stresses

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