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Did you know?
There are 60,000 miles of blood vessels in every adult human.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
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?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).