The answer is body's line of defense. The first line of defense which includes physical as well as chemical barriers would defend the body from infection. It would include the tears, cilia, stomach acid,urine, white blood cells,mucus and the skin. The skin is the largest organ and would act as a barrier from pathogens. If first line of defense won't work the second line will then be activated.
which of these is advantage of a CT scan over an MRI <u>"it improves the ability to make a diagnosis".</u>
A computerized tomography (CT) scan consolidates a progression of X-beam pictures taken from various points around your body and uses PC preparing to make cross-sectional pictures (cuts) of the bones, veins and delicate tissues inside your body. CT examine pictures give more-detailed data than plain X-rays do.
Random. Hope this helps:)
