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Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

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More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Hematopoesis (Genesis of blood cells) Hematopoesis (Genesis of blood cells)
Illustration showing how the primary breast tumor metastasized through the lymphatic and blood vesse Illustration showing how the primary breast tumor metastasized through the lymphatic and blood vesse
Levels of Ghrelin in Human Blood Plasma Levels of Ghrelin in Human Blood Plasma
Types of white blood cells. Types of white blood cells.
Cardiac Muscle Tissue Cardiac Muscle Tissue
Normal red blood cells (round) and sickled red blood cells Normal red blood cells (round) and sickled red blood cells
Video: Bone Healing Animation

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