Biology · Nutrition
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Which of the following associations between the type of mane cell or gland and Its secretions is correct?
- A
Mucous cells -> HCl
- B
Chief cells -> pepsinogen
- C
Parietal cells -> mucus
- D
Pyloric glands -> gastric juice
The correct answer is that Chief cells secrete pepsinogen. Pepsinogen is the inactive form of pepsin, an enzyme crucial for protein digestion. Mucous cells secrete mucus to protect the stomach lining from self-digestion by HCl, which is secreted by Parietal cells along with intrinsic factor. Pyloric glands play a role in secreting mucus and the hormone gastrin but are not responsible for producing the entirety of gastric juice.
Mucous cells primarily secrete mucus, not hydrochloric acid (HCl), which helps protect the stomach lining from the acidic environment.
Chief cells are responsible for secreting pepsinogen, an inactive precursor that is converted to pepsin to aid in protein digestion.
Parietal cells secrete hydrochloric acid (HCl) and intrinsic factor, not mucus. HCl is crucial for creating an acidic environment for digestion.
Pyloric glands primarily secrete mucus and the hormone gastrin rather than the full composition of gastric juice.
Tagged under Biology · Nutrition · 2010