« previous next »
« previous next »
 

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

A skeletal mount of an African Lion attacking a Common Eland on display at The Museum of Osteology, A skeletal mount of an African Lion attacking a Common Eland on display at The Museum of Osteology,
Blood glucose measurement. A postprandial test may be self-administered. (a) A lance pierces the ski Blood glucose measurement. A postprandial test may be self-administered. (a) A lance pierces the ski
Suzuki Harunobu, Two Courtesans, Inside and Outside the Display Window, Japanese. Suzuki Harunobu, Two Courtesans, Inside and Outside the Display Window, Japanese.
Dread Scott. What Is the Proper Way to Display a U.S. Flag? Dread Scott. What Is the Proper Way to Display a U.S. Flag?
An intermediate shaft drives the oil pump on this overhead camshaft engine. Note the main gallery ... An intermediate shaft drives the oil pump on this overhead camshaft engine. Note the main gallery ...
The driver information display on a Chevrolet Impala with a 5.3 liter V-8 equipped with active fuel ... The driver information display on a Chevrolet Impala with a 5.3 liter V-8 equipped with active fuel ...
Video: Plant Defense Mechanisms from Pathogens

For a complete list of videos, visit our video library