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Did you know?

Cyanide works by making the human body unable to use oxygen.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

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There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

The pancreas. This organ sits just below the stomach and is both an exocrine and an endocrine gland. The pancreas. This organ sits just below the stomach and is both an exocrine and an endocrine gland.
Peripheral nervous system PNS Diagram Peripheral nervous system PNS Diagram
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Video: Blood Flow through the Human Heart

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