<Tr> <Th> FMA </Th> <Td> 55589 </Td> </Tr> <Tr> <Td_colspan="2"> Anatomical terminology (edit on Wikidata) </Td> </Tr> <P> The tunica intima (New Latin "inner coat"), or intima for short, is the innermost tunica (layer) of an artery or vein . It is made up of one layer of endothelial cells and is supported by an internal elastic lamina . The endothelial cells are in direct contact with the blood flow . </P> <P> The tunicae of blood vessels are three layers--an inner layer (the tunica intima), a middle layer (the tunica media), and an outer layer (the tunica adventitia). </P>

What is the function of the tunica interna
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