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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

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Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

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About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

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Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

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Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Structure of cholesterol and steroid hormones derived from cholesterol Structure of cholesterol and steroid hormones derived from cholesterol
Synthesis and major functions of the chief steroid hormones in animals. Synthesis and major functions of the chief steroid hormones in animals.
The renin–angiotensin–aldosterone pathway The renin–angiotensin–aldosterone pathway
Classification of Sex Steroid Hormones Classification of Sex Steroid Hormones
Renin-angiotensin-aldosterone system. Renin-angiotensin-aldosterone system.
The renin–angiotensin–aldosterone system The renin–angiotensin–aldosterone system
Video: Types of Shock (Part 2 of 2)

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