skeleton 3D print model
Human skeleton Main article: human Skeleton Additional information: List of bones of the human skeleton and the musculoskeletal system Skeleton (lat. sceleton seu sceletum) generally form bones (lat. ossa), which, in turn, are a solid support for the soft tissues of the body and levers moved in space by the force of muscle contraction. The adult skeleton consists of approximately 200-208 bones connected by various types of joints.
The skeleton can be divided into two divisions: axial and incremental. The first includes the bones of the head, face, neck and trunk; the second — the bones of the upper and lower limbs and their belts — the shoulder and pelvic. The axial skeleton of an adult consists of 80 bones, including the skull, vertebral column, 12 pairs of ribs and sternum. The vertebral column consists of 33-34 vertebrae. Seven of the smallest, mobile cervical vertebrae make up the most mobile, cervical spine, 12 larger, thoracic vertebrae together with the ribs form a space that protects the organs of the chest, and 5 powerful lumbar vertebrae are located in the lower back. Five sacral vertebrae fused into one bone — the sacrum. The remaining 4-5 vertebrae make up the coccygeal region (our underdeveloped tail). The bones of trunk Main article: Vertebral column and thoracic cage Additional information: Torso, ribs, and sternum The bones of the trunk (lat. ossa trunci) are represented by vertebrae (lat. vertebrae), connected in one column and forming a vertebral column (lat. columna vertebralis), with the edges (lat. costae) and sternum (lat. sternum) .
The vertebral column (lat. columna vertebralis) consists of 32-34 vertebrae:
neck vertebrae (7 bones, lat. vertebrae cervicales), including Atlas (lat. atlas) and epistropheus (lat. axis); thoracic vertebrae (12 bones, lat. vertebrae thoracicae); lumbar vertebrae (5 bones, lat. vertebrae lumbalis); sacral vertebrae (5 bones, lat. vertebrae sacralis) fused into the sacrum (lat. os sacrum); coccygeal vertebrae (3 to 5 bones, lat. vertebrae coccygae) fused into the coccyx (lat. os coccygis). Chest (lat. compages thoracis) consists of 37 bones (of which 12 thoracic vertebrae also belong to the spine):
edges (lat. costae) (2×12 bones); sternum (lat. sternum).