This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Histamine stimulate the secretion of: 
Select and explain. 
A. Gastrin by stomach, B. Pancreatic enzymes, C. HCl by stomach, D. Amylase by salivary gland
C: HCl by stomach
Answer: C: HCl by stomach 
Explanation: According to Davenport theory, hydrochloric acid secretion is an active process in the canaliculi of parietal cells in gastric glands, utilising the energy derived from oxidation of glucose.
Factors stimulating the secretion of HCl:

Gastrin
Histamine
Vagal stimulation

Factors inhibiting the secretion of HCl:

Secretin
Gastric inhibitory polypeptide
Peptide YY