Which of the following form thoracic cage of man?
Ribs
Sternum
Lumbar vertebrae
Thoracic vertebrae
The thoracic cage protects the heart and lungs. It is composed of 12 pairs of ribs with their costal cartilages and the sternum.
The cervical and the lumbar vertebrae form an outward curve, which is called (i)_______, while the thoracic and sacral vertebrae form an inward curve called (ii)_______.
The cervical as well as the lumbar vertebrae form an outward curve, which is called ------------, while the thoracic and sacral vertebrae form an inward curve called -------------.