Oesophagus wall, light micrograph

Oesophagus wall, light micrograph

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Caption: Oesophagus wall. Coloured light micrograph of a section through the human oesophagus, which passes food from the mouth to the stomach. The oesophagus lumen (white, top) is lined by a layer of stratified squamous epithelium (dark purple). This protects underlying tissue and enables the passage of solid material by the lubricant action of its glandular secretion. Next is a supporting layer of connective tissue (pink), the lamina propria , which is rich in elastin fibres. A mucus duct (upper centre) can be seen running down these layers to join the submucosa, which contains mucous glands (purple) for lubricating the oesophagus as food passes through it. At bottom is a thick layer of circular and longitudinal muscles (red). Magnification: x80 when printed 10cm tall.

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Keywords: anatomical, anatomy, biological, biology, cell, coloured, connective tissue, cross-section, digestion, digestive system, duct, epithelium, esophagus, false-colour, false-coloured, gland, glands, gut, healthy, histological, histology, human, human body, lamina propria, layers, light micrograph, light microscope, lm, longitudinal, lumen, mucous gland, muscle, muscles, normal, oesophageal, oesophagus, people, person, pink, purple, section, slice, squamous epithelium, submucosa, tissue, wall

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