@marialuztik-ing1
Active 1 year, 3 months ago
do veins have valves?
-Yes, some veins have one-way valves to help keep blood flowing in the right direction. View
Member's groups
Viewing 1 - 2 of 2 groups
-
MT 13 CD SY 2024 – 2025
-
Viewing 1 - 2 of 2 groups