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Duodenum secretory cells
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Duodenum secretory cells
Duodenum secretory cells. Coloured transmission electron micrograph (TEM) of a section through the human duodenum, showing secretory cells of the surface epithelium (lining). The duodenum is the first part of the small intestine. A row of columnar-shaped cells are seen, each with a rounded nucleus (brown) and mitochondria (purple) in the cytoplasm. Microvilli appear as tiny projections from the surface of the cells (at top). Secretory cells secrete digestive enzymes, and an alkaline fluid into the pancreas which neutralises stomach acids. Microvilli serve to maximise the duodenums surface area and hence its capacity to secrete. Magnification: unknown
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6450111
© STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY
Alimentary Canal Coloured Tem Digestion Digestive System Digestive Tract Duodenum Epithelial Epithelium Micrograph Microvilli Small Intestine System Transmission Electron
EDITORS COMMENTS
This print showcases the intricate beauty of duodenum secretory cells, captured through a coloured transmission electron micrograph. The image provides a glimpse into the inner workings of the human digestive system, specifically focusing on the first part of the small intestine. The section reveals a row of columnar-shaped secretory cells that make up the surface epithelium lining. Each cell is characterized by its rounded nucleus in brown and purple mitochondria within its cytoplasm. Atop these cells, microvilli can be observed as tiny projections, serving to maximize the surface area of the duodenum for increased secretion capacity. These secretory cells play a vital role in digestion by producing digestive enzymes and an alkaline fluid that neutralizes stomach acids when it enters the pancreas. Their ability to secrete efficiently ensures proper breakdown and absorption of nutrients from ingested food. Through this mesmerizing magnified view, we gain appreciation for how our body's complex systems work harmoniously to sustain life. This print not only highlights scientific knowledge but also serves as a reminder of our incredible anatomy and physiology.
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