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A patient comes into the emergency department after an accident at work.A machine blew dust into his eyes and he was not wearing safety glasses.The nurse examines his corneas by shining a light from the side across the cornea.What findings would suggest that he has suffered a corneal abrasion?
Temporary Center
A transient focal point or hub characterized by a particular activity or function, which is not permanent.
Blood Cells
Components of blood, including red cells carrying oxygen, white cells defending against infection, and platelets aiding in clotting.
Yolk Sac
One of the extraembryonic membranes; a pouchlike outgrowth of the digestive tract of embryos of certain vertebrates (e.g., birds) that grows around the yolk and digests it. Embryonic blood cells are formed in the mammalian yolk sac, which lacks yolk.
Nuclear Equivalence
The principle suggesting that all somatic cells of an organism have the same genetic material and therefore, in theory, have the potential to develop into any type of cell or even a whole organism.
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