You may understand the respiratory and digestive systems as separate entities but, in many ways, the two are intimately connected. For example, breathing provides oxygen to help your digestive tract ...

Researchers have found that light modulates digestive system function in sea urchin larvae, even in the absence of food stimuli. Opsin cells, which are involved in light-dependent systems, mediated ...

The mouth starts the digestion process by breaking food down into a more easily digestible form. It does this through a combination of mechanical and chemical digestion. After people take food in ...