I WONDER - How Do Our Veins Control Our Blood Flow?
Interactive Video
•
Health Sciences, Biology
•
KG - 6th Grade
•
Hard
Wayground Content
FREE Resource
The video explains the role of valves in veins, ensuring blood flows in one direction. Valves act like doors, opening to let blood through and closing to prevent backflow. If valves malfunction, the heart must work harder to circulate blood.
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3 mins • 1 pt
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