After every meal, the intestines perform an action called peristalsis—moving food through their hollow interiors with coordinated contractions and relaxations of the smooth muscle. For more than a ...

Scientists produced 3-D looks at shark’s guts. By Veronique Greenwood The inside of a shark is full of curiosities, starting with rows of hardworking teeth that can be replaced by fresh ones ...

According to a new study, slowing the aging of your intestines may be vital to slowing overall aging. An experiment on zebrafish showed that if the aging of just that one organ was slowed through DNA ...

Researchers sheds light on a face-off in the intestines between the immune system and a bacterial pathogen whose family members cause gastrointestinal disease and the plague. The team's insights may ...

Shark intestines have a unique spiral shape that favors fluid flow in one direction. By learning about how this works, physicists hope to apply the principles to robotics and other applications ...

Stomach growling, also called borborygmi, happens when your intestines contract in wave-like motions to digest food. This process is known as peristalsis and can occur several hours after eating or at ...

Sharks have spiral-shaped intestines that work in a similar way to an unusual valve designed by Nikola Tesla. Studying their anatomy could help improve industrial fluid-pump technology. Most animals ...