« previous next »
« previous next »
 

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Hormonal control of parturition. Hormonal control of parturition.
Critical thinking and the assessent process Critical thinking and the assessent process
Ovulation Process The two ovaries alternate ovulation in each monthly cycle. Ovulation Process The two ovaries alternate ovulation in each monthly cycle.
Color mixtures of refracted light—additive process. Color mixtures of refracted light—additive process.
(a) The phagocytic process, beginning in the upper left with bacterial attachment and phagocytic ... (a) The phagocytic process, beginning in the upper left with bacterial attachment and phagocytic ...
Draw step two of the mechanism. Draw step two of the mechanism.
Video: Cognitive development by Piaget (Preoperational stage or intelligence)

For a complete list of videos, visit our video library