The parietal cells are decreased, and the muscularis externa is affected by the ulcer.
Normally, an intact muscularis externa, submucosa, and gastric mucosa will reflect the presence of chief cells found just above the submucosa occupying one-fourth of the entire gastric mucosa.
The muscularis externa is thin and almost eroded with no visible capillaries and vessels.
This layer is permeated by the muscularis externa, which is composed by two well-developed layers of striated muscle (Figure 3B), lined with a poorly-defined serosa.
The muscularis externa tunica is compounded by smooth muscle fibers arranged in two layers, the inner is thick, formed by fibers in the transverse direction (inner circular) and the outer is reduced, composed by fibers in the longitudinal direction (outer longitudinal).
The distribution of elastic fibers as evident by the staining intensity (black deposit) of Verhoeff's haematoxylin stain reflects an increased concentration of elastic fibers in the muscularis externa
of pangolin stomach in contrast to that of bat and rat which was moderately stained (Fig.
Tunica submucosa and tunica muscularis externa thicknesses were measured at a minimum of 48 points at even distances around the intestinal sections.
Villus height, crypt depth, epithelial cell height, ratio of villus height to crypt depth, tunica muscularis externa and tunica submucosa were analysed using a linear model including dietary treatment, region of the small intestine, and the interaction between dietary treatment and region as fixed effects, and piglet nested within diet as a random effect.
The number and size of ganglia in the muscularis externa and the submucosa were significantly greater (P [is less than] .
Schwann Cells and Ganglia in the Muscularis Externa and Submucosa of HA and Normal Appendices(*)
This was characterized by four couceutric layers which included: mucosa, sub mucosa, muscularis externa and serosa; all arranged in different patterns depending on the region of the stomach investigated.
The results of the Van Gieson staining confirmed the presence of collagen fibres, which were more in the sub mucosa than the mucosa and muscularis externa of the stomach (Fig.