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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

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Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

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If all the neurons in the human body were lined up, they would stretch more than 600 miles.

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One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Closed urinary drainage system. Urine being measured after it leaves patient’s body via catheter. Closed urinary drainage system. Urine being measured after it leaves patient’s body via catheter.
Measuring the Specific Gravity of Urine with a Refractometer Measuring the Specific Gravity of Urine with a Refractometer
Common Factors Affecting Urinary PH Common Factors Affecting Urinary PH
Multiple urinary calculi. Multiple urinary calculi.
The female and male urinary systems. The female and male urinary systems.
The kidney with an expanded view of the nephron. The kidney with an expanded view of the nephron.
Video: Digestive chemicals - water, gastric acid, bile & bicarbonate

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