« previous next »
« previous next »
 

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Saguaro National Park in Arizona, part of the Sonoran Desert Saguaro National Park in Arizona, part of the Sonoran Desert
Fallow deer at Avon Valley Country Park, Bristol, England Fallow deer at Avon Valley Country Park, Bristol, England
Chimpanzees in nearby Mahale National Park practice a different grooming style: they clasp hands whi Chimpanzees in nearby Mahale National Park practice a different grooming style: they clasp hands whi
Homeless woman with her possessions on a park bench in Beverly Hills, California. The contrast ... Homeless woman with her possessions on a park bench in Beverly Hills, California. The contrast ...
Video: Stroke volume - preload, sarcomere length and Frank -Starling law

For a complete list of videos, visit our video library