Question

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what are the three types of cells involved in gastric secretion?
white blood cells, red blood cells, and platelets
basal, transitional, and squamous cells
adipose, epithelial, and nerve cells
sensory, motor, and interneuron cells
parietal, chief, and mucous cells

Explanation:

• White Blood Cells, Red Blood Cells, and Platelets: These are blood - related cells (hematopoietic cells) and not involved in gastric secretion.
• Basal, Transitional, and Squamous Cells: Basal cells are stem - like cells in some epithelia, transitional cells are in the urinary tract (for distension), and squamous cells are flat epithelial cells (e.g., in the skin or esophagus). None are specific to gastric secretion.
• Adipose, Epithelial, and Nerve Cells: Adipose cells store fat, nerve cells are for signaling. While epithelial cells are part of the stomach lining, the combination is not specific to gastric secretion.
• Sensory, Motor, and Interneuron Cells: These are nerve cells (neurons) involved in the nervous system (sensing, movement, and integration of signals) and not related to gastric secretion.
• Parietal, chief, and mucous cells:
• Parietal cells secrete hydrochloric acid ($HCl$) and intrinsic factor.
• Chief cells secrete pepsinogen (which is converted to pepsin for protein digestion).
• Mucous cells secrete mucus to protect the stomach lining from the acidic environment.

Answer:

Parietal, chief, and mucous cells.