This page will help you obtain accurate head measurements for babies, children and adults. Head sizes vary from person to person, but generally fall into the size categories below. To be sure though, one size does not fit all! To measure your head circumference, wrap a tape measure around the widest part of your head - over your hair, from your forehead, above your ears and around the back, then round to the front again.
Joint between epiphysis and diaphysis with intervening epiphyseal plate of cartilage. 1  Secondary cartilaginous joints: (symphysis): These are also known as fibro-cartilaginous joints. 2  There articular surface is covered by a thin layer of hyaline cartilage and the bones are united by fibro-cartilage.n this type of joints there is a piece of cartilage between the bones which hold the bones together and makes a joint. Cartilaginous joints are further divided into the following subtypes;
Also known as zygapophyseal or apopphyseal joint, is a synovial joint between the superior articular process of one vertebra and the inferior articular process of the vertebra directly above it. There are two facet joints in each spinal motion segment. The facet joints are situated between the pedicle and lamina of the same vertebra and form the articular pillars that act to provide structural stability to the vertebral column as a whole. Together with the disc, the bilateral facet joints transfer loads and guide and constrain motions in the spine due to their geometry and mechanical function.