<prompt> Secretion of which of the following is completely independent of vagal stimulation?PancreasBrunners gland in duodenumGall bladderParotid  <response>: Gall bladder does not have any secretory activity. It stores and concentrates bile removes water from bile. Pancreatic and duodenal glands have a parasympathetic vagal innervation. Salivary secretion is almost entirely controlled by neural influences, with the parasympathetic branch of the autonomic nervous system playing the most prominent role. 