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Questions and Answers
Which organ pumps blood through the blood vessels of the circulatory system?
Which organ pumps blood through the blood vessels of the circulatory system?
- The liver
- The kidneys
- The heart (correct)
- The lungs
Where is the heart located in humans?
Where is the heart located in humans?
- In the chest (correct)
- In the back
- In the abdomen
- In the head
How many chambers does the heart have in humans, other mammals, and birds?
How many chambers does the heart have in humans, other mammals, and birds?
- Two chambers
- Three chambers
- Four chambers (correct)
- Five chambers
