The effect of histamine on parietal cells would best be described as Paracrine
Explanation:
Cell to cell involves the signal transmission from a “sending cell to a receiving cell”. Basically, four types of chemical signalling which is found in multicellular organism. Paracrine signalling, autocrine signalling, endocrine signalling and signalling by direct contact.
Those cells that are near to each other and communicate through the release of chemical messengers through the space between the cells. in which cells communicate over relatively short distance is called paracrine signalling.
