« previous next »
« previous next »
 

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Did you know?

Everyone has one nostril that is larger than the other.

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

The meninges from the outside in: dura mater, arachnoid, and pia mater. Also showing the subarachnoi The meninges from the outside in: dura mater, arachnoid, and pia mater. Also showing the subarachnoi
Activation energy graph Activation energy graph
The frontal sinus, an airfilled space just behind the brow, is a unique size and shape in each of us The frontal sinus, an airfilled space just behind the brow, is a unique size and shape in each of us
Apply circular fingertip friction on back, moving along spinal muscles from hip to shoulder and over ... Apply circular fingertip friction on back, moving along spinal muscles from hip to shoulder and over ...
International space station International space station
Comparing uncontrolled and controlled energy release. Comparing uncontrolled and controlled energy release.
Video: Nucleic acid digestion - brush border enzymes, end products & transport mechanism

For a complete list of videos, visit our video library