The endocrine system is a network of glands and organs that uses chemical messengers called hormones to regulate metabolism, growth, reproduction, heart rate, blood pressure, and sleep-wake cycles.

The tongue helps with eating, tasting, swallowing, speaking, and breathing. A healthy tongue is pink, but changes in its appearance can signal health issues. Essential to the tongue’s anatomy are ...

The duodenum, the first part of the small intestine, supports digestion, absorbs nutrients, and regulates the release of bile. Common problems with the duodenum include ulcers and inflammation, and ...