Portal:Digestive system/Selected picture

These are selected pictures related to Digestive system which appear on Portal:Digestive system.

Digestive system response to exercise in ME/CFS differs from that in healthy people.

Gut changes after exercise in ME/CFS.

Energy from hydrolysis of ATP is directly coupled to the movement of a specific substance across a membrane.

membrane The word "membrane" can have different meanings in different fields of biology. In cell biology, a membrane is a layer of molecules that surround its contents. Examples of cell-biology membranes include the "cell membrane" that surrounds a cell, the "mitochondrial membranes" that form the outer layers of mitochondria, and the "viral envelope" that surrounds enveloped viruses. In anatomy or tissue biology, a membrane is a barrier formed by a layer of cells. Examples of anatomical membranes include the pleural membranes that surrounds the lungs, the pericardium which surrounds the heart, and some of the layers within the blood-brain barrier.