Picture tests in the histology of the gastrointestinal system 1

You may use the video as a revision for the topic or as a self-assessment tool. For the purpose of self-assessment, pause the video at the beginning of each slide and take your time in reading the question and coming up with the answer then replay the video to confirm your answer and listen to further comments and explanations.

00:00 Introduction
00:26 Q1 Protective features
01:52 Q2 Absorptive features
04:01 Q3 Secretory features
06:25 Q4 Surface specializations
07:45 Q5 The liver
11:45 Q6 Differentiating the cells forming the gastric mucosa

After completing this video you will be able to:
Identify the four layers of the gastrointestinal tube: mucosa, submucosa, muscularis, and adventitia.
Explain the presence of undulations at the border between the epithelium and lamina propria in the esophagus.
Identify the layers of mucosa: epithelium, lamina propria and muscularis mucosae.
Define: microvilli (brush border), villi, plicae circulares and discuss their function of each.
Identify sections of the esophagus, stomach, small intestine, and liver.
Discuss the direction of blood flow and bile flow in the hepatic lobule.
Identify gastric pits and glands, gastric mucous glands, parietal cells, peptic cells, goblet cells, and hepatic cells and discuss the function of each.
Locate the central vein of the liver, hepatic sinusoids, portal triad and portal tract.

Presented and edited by Dr. Akram Jaffar, Ph.D.

Images in slides 3 & 5, with gratitude, were cited in:
http://www.histologyguide.org/index.html

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