The area inside the Adult circumference head also receives blood supply from the vertebral arterieswhich travel up through the cervical vertebrae. Familial variation of head size and adjustment for parental head circumference. This article has been cited by other articles in PMC. An analysis of variance test for normality complete samples. The vertical distance Adult circumference head the tip of the chin menton to the deepest point of the nasal root depression between the eyes sellion. WeaverEric J.