HUMAN NUTRITION

Detailed explanation-1: -Some of a baby’s bones are made entirely of a special material called cartilage (say: KAR-tel-ij). Other bones in a baby are partly made of cartilage. This cartilage is soft and flexible. During childhood, as you are growing, the cartilage grows and is slowly replaced by bone, with help from calcium.

Detailed explanation-2: -Endochondral Ossification This process involves the replacement of hyaline cartilage with bone. It begins when mesoderm-derived mesenchymal cells differentiate into chondrocytes. Chondrocytes proliferate rapidly and secrete an extracellular matrix to form the cartilage model for bone.

Detailed explanation-3: -A baby’s body has about 300 bones at birth. These eventually fuse (grow together) to form the 206 bones that adults have. By the age of six, many of these bones have fused together, bringing the number closer to the 206 bones of an adult. The number is dependent on the individual child.