Meaning of vein valve | Babel Free
Definitions
A small, crescent-shaped flap of tissue that is located in a vein and operates as a one-way valve to direct blood flow towards the heart and to prevent backflow.
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.