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Distribution map of human organs The human body consists of head, neck, trunk and limbs. Among them, bone, cartilage and bone connection are called bone. Bones include 206 bones, including 29 skulls; 22 vertebrae (7 cervical vertebrae, 0/2 thoracic vertebrae, 5 lumbar vertebrae, and 0/0 sacral vertebrae); 32 pairs of ribs * * *; Generally speaking, skeletal muscle is divided into three categories: smooth muscle, myocardium and skeletal muscle. In addition, there are ligaments and joints, as well as skin and blood vessels.