« previous next »
« previous next »
 

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

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.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

red blood cells red blood cells
Insulin, glucagon, and blood glucose Insulin, glucagon, and blood glucose
Control of blood glucose by pancreatic hormones. Control of blood glucose by pancreatic hormones.
Insulin, glucagon, and blood glucose. Insulin, glucagon, and blood glucose.
Blood Supply to the Lungs Blood Supply to the Lungs
Forms of carbon dioxide in the blood Forms of carbon dioxide in the blood
Video: Activation Energy - Valence Electrons

For a complete list of videos, visit our video library