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Author Question: A handheld device that directs a pump to deliver medication is used for: A) patient-controlled ... (Read 35 times) |
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
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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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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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Vaccines prevent between 2.5 and 4 million deaths every year.