What is the process of x-ray refraction and how does it affect the imaging of internal structures in the human body?

X-ray refraction is the bending of x-rays as they pass through different tissues in the body. This bending occurs due to the varying densities of tissues, which causes the x-rays to change direction. This refraction affects the imaging of internal structures by creating contrast between different tissues, allowing for clearer visualization of bones, organs, and other structures in the body.