There are 24 ribs
The Ribs primary function is to protect the thoracic viscera, or the heart and lungs. The pelvis' main function is to protect the pelvic viscera
13 pairs which consists of 7 pair "true" ribs and 6 pair "false" ribs.
False ribs are not attached to the sternum but only to the vertebrae of the spinal column. Their function is the same as the true ribs and that is protection of the heart, lungs, liver, spleen and part of the intestines.
to protect interior organs
it gives the ventral side of the ribs support
The primary function if the ribcage is to protect the internal vital organs (heart & lungs) and to provide support for the structure of your body. Think of your position or posture if there were no ribs in the torso...
To help rats to breathe
to hold it's urine.
To add extra support, as well as an anchor, for the ribs.
To protect key organs in the chest such as the heart and lungs
it helps you muscles to contract and expand when you inhale and exhale.