Question

Question 35 1 pts cell synthesize The stomach acid from // carbon O parietal cell dioxide and water carbonic mucous cell anhydrase // amino O chief cell acids O chief cell // НСІ O parietal cell // bicarbonate and water

Answer 1

1) The correct answer is-

A- Parietal cells ; carbon dioxide and water

This is because the acid HCl is produced by the parietal cells of the stomach. First the water (H₂O) and carbon dioxide (CO₂) combine within the parietal cell cytoplasm to produce carbonic acid (H₂CO₃) which catalysed by carbonic anhydrase. H₂CO₃ dissociates into a hydrogen ion (H⁺) and a bicarbonate ion (HCO₃^–). The hydrogen ion that was formed is transported into the stomach lumen via the H⁺– K⁺ ATPase. An anion exchanger transports the bicarbonate ion out the cell in exchange for a chloride ion (Cl^–). This chloride ion is then transported into the stomach lumen via a chloride channel. Thus H+ and Cl- combines to form HCl.

2) The correct answer is-

B- The Crypt of Lieberkuhn has immature enterocytes