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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

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No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

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A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Evolutionary adaptation to a new environment via natural selection. Evolutionary adaptation to a new environment via natural selection.
The four ways in which animals exchange heat with the environment are radiation, evaporation, convec The four ways in which animals exchange heat with the environment are radiation, evaporation, convec
The Environment Influences Gene Expression The Environment Influences Gene Expression
Adults in late adulthood may need to adapt to a new environment as they age and their health status Adults in late adulthood may need to adapt to a new environment as they age and their health status
Caregivers’ responses sometimes help a child with strong emotions adapt to the environment. Caregivers’ responses sometimes help a child with strong emotions adapt to the environment.
Is my concept map correct? (Grade 12 Bio) Is my concept map correct? (Grade 12 Bio)
Video: Secretin (inhibiting gastric acid secretion), Cholecystokinin (fat digestion) & Cholecystokinin

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