« previous next »
« previous next »
 

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

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

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

The Atmosphere’s Oxygen Came from Photosynthetic Organisms The Atmosphere’s Oxygen Came from Photosynthetic Organisms
Blood pressure and blood volume relationship Blood pressure and blood volume relationship
In 1839 Mary Cragin, at the age of twenty-nine, became a convert to John Humphrey Noyes’s “communism In 1839 Mary Cragin, at the age of twenty-nine, became a convert to John Humphrey Noyes’s “communism
A fuel-pressure reading does not confirm that there is enough fuel volume for the engine to ... A fuel-pressure reading does not confirm that there is enough fuel volume for the engine to ...
Thermal Layers of the Atmosphere Thermal Layers of the Atmosphere
Solar energy heats the atmosphere, creates seasons, and causes air to circulate Solar energy heats the atmosphere, creates seasons, and causes air to circulate
Video: Conduction of action potentials

For a complete list of videos, visit our video library