Oesophagus. Light micrograph of a cross-section through the human oesophagus. The oesophagus forms a tube which passes food from the mouth to the stomach. Its lumen (inner cavity,at centre) is lined by a thick,protective stratified squamous epithelium (dark blue). This is folded to allow the wall to stretch. Beneath the epithelium lies a lamina propria layer (light blue) containing lymphoid tissue (dark patches). Beneath the lamina propria are two thick layers of muscle (mauve): an inner circular muscle layer,and an outer layer of longitudinal muscle. These muscle layers cause peristaltic contractions to move food along to the stomach. Magnification: x4 at 6x6cm size | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Pasieka, Alfred |
Bildgröße: | 4252 px × 4247 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |