What is the primary function of valves inside 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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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To store blood temporarily
To decrease heart rate
To ensure blood flows in one direction
To increase blood pressure
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do valves in veins operate to manage blood flow?
They close to stop blood from entering the veins
They remain open at all times
They open to let blood through and close to prevent backflow
They open and close randomly
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What analogy is used to describe the function of valves in veins?
They are like windows
They are like doors
They are like filters
They are like pumps
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens if the valves in veins do not function properly?
The blood pressure decreases
The veins become larger
The heart has to work harder
The blood flows more efficiently
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a potential consequence of valves not closing properly?
Heart rate decreases
Blood pressure increases
Blood flows faster
Blood flows backward
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