Bones in Human Body. The human skeleton is the internal framework of the body. It is composed of around 270 bones at birth – this total decreases to around 206 bones by adulthood after some bones have fused together. The bone mass in the skeleton reaches maximum density around age 21. Eartsthslab.com

Skull. The skull is the bony skeleton of the head. Excluding ear ossicles, it is made of 22 bones. All the bones of skull, joined together by sutures, are immobile and create the cranium, with the exception of mandible (bone of lower jaw). On the other hand, the two terms skull and cranium are used synonymously. Eartsthslab.com

Bones of Upper Limb. There are around 30 bones in each upper limb the longest being the Humerus bone. In the figure below phalanges and metacarpals bones are grouped together. Eartsthslab.com

Vertebral COlumn. The vertebral column is a vertical series of approximately 33 small bones (known as vertebrae), which are separated by intervertebral discs. It can be separated into five different regions, with each region characterised by a different vertebral structure. Eartsthslab.com

RIBSThe ribs stretches posteriorly from thoracic vertebrae to the anterior lateral edges of the sternum. They are ribbon like, elastic bony arches and flat in shape. Coastal cartilages are joined to the anterior ends. The costal cartilage and ribs together makes the costa. Also the large part of the thoracic skeleton is created by the ribs and their costal cartilages. Eartsthslab.com

Bones of Pelvis. The pelvic skeleton is formed by the sacrum and the coccyx at the back and by a pair of hip bones on each side. Each hip bone consists of 3 sections, ilium, ischium, and pubis. Eartsthslab.com

Bones of Lower Limb. The lower limb contains 30 bones. These are the femur, patella, tibia, fibula, tarsal bones, metatarsal bones, and phalanges. Eartsthslab.com