<prompt> True about carotid body tumor-a Arises from pharyngeal wallb Arises from baroreceptor cells.c Commonly seen in high altitude habitantsd 10 have family historye FNAC is diagnosticabcdbdac  <response>: Carotid body tumors arise from chemoreceptor cells of the carotid body Baroreceptor cells are found in carotid sinusSince the chemoreceptor cells are stimulated by decreased arterial oxygen tension, a higher incidence of carotid body tumors is noted in oxygen deprived individuals i.e. cyanotic heart ds, chronic hypoxia in high altitude inhabitants.According to Bailey 25e p732- Family history is seen in -10 patients. According to Schwartz its 35FNAC biopsy are contraindicated because of the highly vascular nature of the tumor. 