« previous next »
« previous next »
 

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Did you know?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Action Potentials and Contractions of a Muscle Fiber Action Potentials and Contractions of a Muscle Fiber
Gating of sodium and potassium channels during an action potential. Gating of sodium and potassium channels during an action potential.
Technology In Action Complete Technology In Action Complete
Action Potentials: the Status of Na+ and K+ Voltage-Gated Channels Action Potentials: the Status of Na+ and K+ Voltage-Gated Channels
The sequence of steps during delivery is shown clearly in these drawings The sequence of steps during delivery is shown clearly in these drawings
The potential involvement of colchicine in doubling the chromosome number The potential involvement of colchicine in doubling the chromosome number
Video: Virtual Tour of the Eye Animation

For a complete list of videos, visit our video library