What is the main organ of the circulatory system?
Circulatory System

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•
Biology
•
4th - 9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The heart is the main organ of the circulatory system.
2.
FLASHCARD QUESTION
Front
What do red blood cells do?
Back
Red blood cells carry oxygen from the lungs to the body cells and transport carbon dioxide from the cells back to the lungs.
3.
FLASHCARD QUESTION
Front
What is the job of the heart?
Back
The job of the heart is to pump blood around the body.
4.
FLASHCARD QUESTION
Front
Do veins carry oxygen-poor blood back to the heart?
Back
True, veins carry oxygen-poor blood back to the heart.
5.
FLASHCARD QUESTION
Front
What function does the heart perform?
Back
The heart is a pump that moves blood; arteries and veins are the pipes where blood flows.
6.
FLASHCARD QUESTION
Front
What are arteries?
Back
Arteries are blood vessels that carry oxygen-rich blood away from the heart.
7.
FLASHCARD QUESTION
Front
What is the role of capillaries?
Back
Capillaries are tiny blood vessels where the exchange of oxygen, carbon dioxide, nutrients, and waste occurs.
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