<prompt> All of the following catecholamines are secreted endogenously, EXCEPT:EpinephrineNorepinephrineDopamineDobutamine  <response>: The medulla of adrenal gland is extremely vascular and consists of large chromophil cells arranged in a network. It is made of 2 cell types called pheochromocytes--epinephrine-producing more numerous and norepinephrine-producing cells. These cells synthesize and secrete the catecholamines - epinephrine in greater amounts, norepinephrine and, to a lesser extent, dopamine. Ref: Molina P.E. 2010. Chapter 6. Adrenal Gland. In P.E. Molina Ed, Endocrine Physiology, 3e. 