<prompt> The shoest diameter in fetal head is:Biparietal diameterBimastoid diameterOccipito frontal diameterBitemporal Diameter  <response>: IMPOANT FETAL SKULL PARAMETERS Sub occpito brematic 9.5 cms : Sub mento bregmatic 9.5 cms Biparietal diameter 9.5 cms Mento veical 14 cms Submento veical 10cms Bi temporal diameter 8 cms Bimastoid: 7.5 cms 