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;
The cartilage between the primary and secondary ossification centers is called the epiphyseal plate, and it continues to form new cartilage, which is replaced by bone, a process that results in an increase in length of the bone. Growth continues until the individual is about 20 years old or until the cartilage in the plate is replaced by bone. The point of union of the primary and secondary ossification centers is called the epiphyseal line. Appositional bone growth. The growth in diameter of bones around the diaphysis occurs by deposition of bone beneath the periosteum.