« previous next »
« previous next »
 

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

The circulatory system plays a central role in thermoregulation by the moth, Manduca sexta The circulatory system plays a central role in thermoregulation by the moth, Manduca sexta
Nervous system. Nervous system.
The Formation of the Solar System The Formation of the Solar System
Typical wiring diagram of a V-6 distributorless (direct fire) ignition system. Typical wiring diagram of a V-6 distributorless (direct fire) ignition system.
Gene editing using the CRISPR-Cas9 system. Gene editing using the CRISPR-Cas9 system.
Development Accounting Development Accounting
Video: Digestive chemicals - types & enzymes

For a complete list of videos, visit our video library