Late elongation of the cranial base.
A single logistic curve was fitted to serial data for three cranial base lengths (S-N, Ba-N, and Ba-S) in 33 boys and 26 girls. Elongation during pubescence plus adolescence is greater in boys than girls for each length. The maximum rate of pubescent elongation occurs earliest in Ba-N. There are no consistent sex differences in the maximum rates of elongation but they occur considerably earlier in girls. Similarly, girls reach 95% of their adult lengths at younger ages than boys.
D000293:Adolescent; D000367:Age Factors; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008954:Models, Biological; D011627:Puberty; D012737:Sex Factors; D012886:Skull / Q000254:growth & development*