There are 12 pairs of curved bones called X in our chest region. One end of bones X is joined to the backbone and their other end is joined to bone Y in the front to form a box-like structure Z. This strong, box-like structure protects the delicate internal organs P, Q and R of our body.

Y is called _____ bone.

There are 12 pairs of curved bones called X in our chest region. One end of bones X is joined to the backbone and their other end is joined to bone Y in the front to form a box-like structure Z. This strong, box-like structure protects the delicate internal organs P, Q and R of our body.

Z is called _____ cage.

There are 12 pairs of curved bones in our chest region. One end of bones is joined to the backbone and their other end is joined to the bone in the front to form a box-like structure. This strong, box-like structure protects the delicate internal organs P, lungs and liver of our body.

Name the organ P?

There are 12 pairs of curved bones in our chest region. One end of these bones is joined to the backbone and their other end is joined to the bone in the front to form a box-like structure. This strong, box-like structure protects the delicate internal organs heart, Q and liver of our body.

Name the organ Q?

There are 12 pairs of curved bones in our chest region. One end of these bones is joined to the backbone and their other end is joined to the bone in the front to form a box-like structure. This strong, box-like structure protects the delicate internal organs heart, lungs and R of our body.

Name the organ R?