What is the primary function of valves in veins?
I WONDER - How Do Our Veins Control Our Blood Flow?
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Health Sciences, Biology
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KG - 6th Grade
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Hard
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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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5 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
Why is it important for blood to travel in one direction?
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
Explain how valves in veins are similar to doors.
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
What happens when valves do not open or close properly?
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
What does it mean when the heart has to work extra hard?
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