<prompt> Which of the following is considered as a marker for epididymal function?FructoseTestosteroneAcid phosphataseCarnitine  <response>: In the epididymis, the columnar cells that, with the basal cells, form the majority of the epithelium. These cells extend from the lumen to the basal lamina, They also have non-motile stereocilia, which are long and branching in the head region and shoer in the tail region. They also secrete carnitine, sialic acid, glycoproteins, and glycerylphosphorylcholine into the lumen.Ref: Ganong;s review of medical physiology; 24th edition; page no: 419 