What You May See and Hear During Echocardiography. As the doctor or sonographer moves the transducer around, different views of your heart can be seen on the screen of the echo machine. The structures of the heart will appear as white objects, while any fluid or blood will appear black on the screen.
Ostracoderms (shell-skinned) refers to the armored jawless fishes of the Paleozoic. The term does not often appear in classifications today because it is paraphyletic or polyphyletic, and has no phylogenetic meaning.he microscopic layers of that shield appear to evolutionary biologists, like they are composed of little tooth-like structures.. Neil Shubin writes: Cut the bone of the [ostracoderm] skull openâ¦pop it under a microscope andâ¦you find virtually the same structure as in our teeth.
Both the name ostensorium and the kindred word monstrance ( monstrancia , from monstrare ) were originally applied to all kinds of vessels of goldsmith's or silversmith's work in which glass, crystal, etc. were so employed as to allow the contents to be readily distinguished, whether the object thus honoured were the Sacred Host itself or only the ...