[Craniofacial growth under the influence of the blood supply. 6. Metric studies of the skull].
Cephalometric data show that the distances spanning several skull bones also have the highest growth rates. No sexual dimorphism can be observed in the skulls of animals that are six weeks old; such differences do not appear until after the fourth month of life. Allometric studies reveal a relative narrowing of the neurocranium and a relative broadening of the rostrum and zygomatic arch. The broadening of the zygomatic arch complex is related to the postnatal development of the masseter muscle. Vector analysis is used to demonstrate the growth activities of the different parts of the skull. Local changes in the bone during growth was observed in the regions of muscle origin and attachment.