Block10-1/Fig 9. 93W4522 Stomach and Duodenum (ls) H&E.

block10-1_21.jpg - Fig 9. 93W4522 Stomach and Duodenum (ls) H&E.Fig 9a. shows the junction between the pylorus and theduodenum. The pyloric sphincter (PS) appears as a thickenedregion of smooth muscle below the pyloric mucosa. Itsthickness, mostly due to the amplification of the circular layer ofsmooth muscle of the muscularis externa (ME), can beappreciated by comparison with the muscularis externa in theduodenum. The area marked by the rectangle is shown athigher magnification in Fig 9b.Pyloric glands (PG) are branched, coiled, tubular glands. Thelumen is relatively wide, and the secretory cells are similar inappearance to the surface mucous cells. The submucosa of theduodenum contains submucosal glands, Brunner's glands (BG).These glands are below the muscularis mucosa (MM). Themicroscopic structure of the duodenum is similar to the jejunumshown in Fig 10. However, the jejunum does not havesubmucosal gland.

Fig 9. 93W4522 Stomach and Duodenum (ls) H&E.
Fig 9a. shows the junction between the pylorus and the duodenum. The pyloric sphincter (PS) appears as a thickened region of smooth muscle below the pyloric mucosa. Its thickness, mostly due to the amplification of the circular layer of smooth muscle of the muscularis externa (ME), can be appreciated by comparison with the muscularis externa in the duodenum. The area marked by the rectangle is shown at higher magnification in Fig 9b.
Pyloric glands (PG) are branched, coiled, tubular glands. The lumen is relatively wide, and the secretory cells are similar in appearance to the surface mucous cells. The submucosa of the duodenum contains submucosal glands, Brunner's glands (BG). These glands are below the muscularis mucosa (MM). The microscopic structure of the duodenum is similar to the jejunum shown in Fig 10. However, the jejunum does not have submucosal gland.

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