<prompt> Coronaryblood flow is increased by all of the following exceptBeta adrenergic blockadeA decrease in aerial po2An increase in aerial pCO2Vagal stimulation  <response>: Beta adrenergic receptors causes karana vasodilation to increase CBF Blockage of these receptors causes decrease in the CBF Ref: page no 366 Textbook of physiology Volume 1 AK Jain 7th edition 