« previous next »
« previous next »
 

Did you know?

The longest a person has survived after a heart transplant is 24 years.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

Structure of water and ice Structure of water and ice
Water binding in hemoglobin Water binding in hemoglobin
Water Polar Bond Water Polar Bond
Water Molecules Water Molecules
In countries where water can be contaminated, breastfeeding is an important option for the health of ... In countries where water can be contaminated, breastfeeding is an important option for the health of ...
Hormones acting through the brain help regulate metabolism and short- and long-term appetite. Hormones acting through the brain help regulate metabolism and short- and long-term appetite.
Video: Dorsal Recumbent Position

For a complete list of videos, visit our video library