Where do the inferior and superior vena cava meet? Oright atrium
O tricuspid valve
Oright ventricle
O pulmonary semilunar valve

Where do the inferior and superior vena cava meet?

O right atrium Would be The Correct Answer

Explanation:

The cavoatrial junction is the point at which the superior vena cava meets and melds into the superior wall of the cardiac right atrium.

Therefore, Your Answer Is Option A. (Right Atrium)

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white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.