Countercurrent exchange is used to transfer heat or gases (O2) between 2 media separated by a barrier. Which of these does NOT occur in countercurrent exchange?   the 2 fluids flow in opposite directions the fluids flow perpendicular to one another when they reach the end of the exchange zome the 2 fluids slowly mix with one another in a sinus the fluid with the most heat or oxygen passes alongside the fluid with the least heat or oxygen all of these are correct

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Hematology

Hematology is the branch of biology. Hematology is the medical field that deals with the treatment of blood disorders and cancers, such as hemophilia, leukemia, lymphoma, and sickle-cell anemia. Hematologists and hematopathologists are medical professionals who specialize in illnesses of the blood and its components.