« previous next »
« previous next »
 

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

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

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?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

What makes tea so good What makes tea so good
Constructing large motifs from smaller ones Constructing large motifs from smaller ones
Vasoconstriction and vasodilation. Vasoconstriction and vasodilation.
Galaxies Forming by Combining Smaller Units Galaxies Forming by Combining Smaller Units
Medicinal leeches on a patient’s neck. Today leeches are sometimes used in microsurgery to prevent b Medicinal leeches on a patient’s neck. Today leeches are sometimes used in microsurgery to prevent b
How body makes blood flow more into brain instead of foot? How body makes blood flow more into brain instead of foot?
Video: Introduction to Epilepsy

For a complete list of videos, visit our video library