There are 20 feet of blood vessels in each square inch of human skin.
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Excessive alcohol use costs the country approximately $235 billion every year.
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The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
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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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There are more nerve cells in one human brain than there are stars in the Milky Way.
A blood smear. The smear reveals representative cells from each formed element group: red blood cell
Four Brain Structures with High Myelination in Early Childhood
Major parts of the cell and the structures located inside the cell.
Cross section of peritoneum with related organs and structures.