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Sentence analysis
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Sentence
Span Details
血管弁膜
valve of the veins; venous valvenoun
は
topic markergrammar
血液
bloodnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
逆流
backward flow; backflow; reflux; regurgitationnoun, suru verb
を
object markergrammar
防ぐ
defend against; protect against; prevent; avert; avoidgodan verb
役割を果たし
play a role; serve a function; play a part-> 役割を果たすexpression, verb
ている。
ongoing or resultant stategrammar