jltui uuring exercise.
these physiological effects probably gave us an
advantage in surviving some fight-or-flight
situations in our past.
✓ check your understanding
1. two approaches to removing wastes and
toxins from fluids were described in this
lesson. why do we think the body uses
the second approach rather than the first?

How do we if it is a video and they know your face.

Unlike  ct scans, which use x-rays,  mri scans  use powerful magnetic fields and radio frequency pulses to produce detailed pictures of organs, soft tissues, bone and other internal body structures.  differences between  normal and abnormal tissue is often clearer on an  mri  image than a  ct.you can see more with a mri scan. for example on an mri you can see internal bleeding.