Exocrine glands
Students revise some of the essential topics from parts of the SL course so that they are ready to explore the detail of epithelial cells and exocrine glands which are found in different forms all along the gastrointestinal tract. The structure of epithelial cells and the adaptations of cells for secretion of mucus or enzymes is covered using a gallery of diagrams and some questions. What do we already know about the...