Normal oesophagus and stomach. Coloured X-ray of an oblique (45 degree angle) view of the upper abdomen of a female with a healthy oesophagus (upper left) and stomach (lower right). They are seen in high contrast because a meal containing radio-opaque barium was given prior to this X-ray to highlight them. The oesophagus is the tube that carries food and drink from the mouth to the stomach. The stomach is a sac-like organ that digests the food, which is then passed onto the small intestine (not seen).