If you were to observe the lining of the stomach with a microscope, you would notice numerous pits in the mucosal layer which are the entrance to the gastric glands which produce mucus, stomach (hydrochloric) acid, enzymes, and hormones that all aid in digestion. Similar to the esophagus, a thin lamina propria holds the basement membrane underlining tissue and it has a muscularis mucosae. Likewise, the submucosal layer of the stomach has blood vessels and nerves. As mentioned above, the muscularis has 3 brands of fibers; the inner oblique, the middle circular, and outer longitudinal. Lastly, the stomach is surrounded by the serous which forms part of a serosal membrane.
These pictures were taken by bio 139 students in the spring of 2018 and fall of 2019. Scroll through the pictures and compare them with the labeled picture. Select one and draw it. This model shows what the layers should be also.
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