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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

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Women are 50% to 75% more likely than men to experience an adverse drug reaction.

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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

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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.

Hare running in open field Hare running in open field
A speculum used to hold the vagina open in order to visualize the cervix. A speculum used to hold the vagina open in order to visualize the cervix.
(A) Fibula and tibia communited fracture. (B) Simple, tranverse fracture. (C) Open fracture of the ... (A) Fibula and tibia communited fracture. (B) Simple, tranverse fracture. (C) Open fracture of the ...
A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ... A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ...
The position of an object that is oscillating on a spring is given by the equation x = (18.3 ... The position of an object that is oscillating on a spring is given by the equation x = (18.3 ...
Comparison of open and closed circulatory systems. Comparison of open and closed circulatory systems.
Video: Power Supply Polyacrylamide Gel Protein Sample

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