Answered by AI, Verified by Human Experts
Final answer:The secretory cells of the stomach and their respective secretions are mucin (by mucus neck cells), pepsinogen (by chief cells), gastrin (by enteroendocrine cells), acidic mucin (by cardia and pylorus cells), and hydrochloric acid and intrinsic factor (by parietal cells).Explanation:The secretory cells of the stomach and their secretions are as follows:Mucin: Secreted by the mucus neck cells.Pepsinogen: Secreted by the chief cells. It is activated to pepsin, a protein-digesting enzyme, by the hydrochloric acid in the stomach.Gastrin: Secreted by the enteroendocrine cells of the pyloric antrum. It stimulates the secretion of gastric juice.Acidic mucin: Secreted by the cardia and pylorus; it helps to protect the stomach lining from acid damage.Hydrochloric acid and intrinsic factor: Secreted by the parietal cells. Hydrochloric acid helps activate pepsinogen and denature proteins, while intrinsic factor is required for the absorption of vitamin B12 in the small intestine....