Forget what you were told in biology class, as researchers have classified a brand-new organ inside the human body. The mesentery was long-believed to be made up of separate structures, but a new ...

Flutters, knots and other stomach sensations tied to nervousness are all examples of the gut-brain axis in action.

The morphology and regeneration of the digestive system of the ophiuroid Amphipholis kochii were investigated. The epithelia of the esophagus and stomach of A. kochii were composed of typical ...

The structure and function of the kidney, including its roles in urine production and homeostasis. This is the first in a series of articles examining the renal system. Abstract The kidneys are ...