Which of the following statements about Histamine is true:
D i.e. All Histamine is formed by decarboxylation of amino acid histidineQ, and is found in mast cell, basophils, enterochromaffin like cells of gastric mucosa and brainQ. It has been related to arousal, sexual behaviourQ, regulation of secretion of some anterior pituitary hormones, blood pressure, drinking & pain threshold.
Is found in Mast cells
Increases gastric acid secretion
Related to arousal and blood pressure
All of the above