Explanation:
The two main types of exocrine secretory cells of the stomach are parietal cells and chief cells. Parietal cells secrete hydrochloric acid and chief cells secrete digestive enzymes such as pepsin
Filling the gaps of the excerpt in the question
The parietal cells of the stomach secrete ___Hydrochloric acid___________, while the chief cells secrete ___Digestive enzymes _
Parietal cells are epithelical cells found in the gastric glands in the human stomach which secerete hydrochloric acids while the chief cells are basophilic cells that are located in the bottom of the gland they produce digestive enzymes such as pepsin.
Hence we can conclude that the answers to the question are as listed above.
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