Subscribe Now! National Geographic Magazine $15
Visit our Online Shops

Sign up for free

Newsletters

Once a month
get new photos
and expert tips.

Digestive System

Illustration: Digestive system
Once food is swallowed, it passes through the esophagus into the stomach, the pink organ shown here above the yellow pancreas. A large, muscular chamber, the stomach produces digestive juices like pepsin, lipase, and hydrochloric acid, which digest and dissolve stomach contents.
Illustration by PureStock

Health and Human Body Topics

SPECIAL ADVERTISING SECTION

Photo: 2009 Winner

Photo Contest

Find out who takes home the Grand Prize!

Photo: Man carrying a kayak

Adventure Videos

Check out adventure videos from our West Coast Adventure Editor Steve Casimiro and go "Behind the Lens."

Body: The Complete Human

Image: Cover of Body: The Complete Human book

Explore the human machine.

The Incredible Human Body DVD and Video

Image: Cover of the Incredible Human Body video and DVD

Explore the human body from the inside out.