22+ Human Anatomy Rib Cage Organs. The ribs are a set of twelve paired bones which form the protective 'cage' of the thorax. For a gesture drawing, that's good enough.
Rib cage and internal organs. Separates the thoracic and abdominal. While the rib cage provides secondary protection to organs in a human's abdominal area, it primarily protects the heart and lungs.
The rib cage is the arrangement of ribs attached to the vertebral column and sternum in the thorax of most vertebrates, that encloses and protects the vital organs such as the heart.
You can click the image to magnify if anterior view of muscle attachments of chest costa. But for an anatomy study, it's not. Basic human anatomy lesson 4: This is unique to humans, allowing us to lie on our backs comfortably.