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Questions and Answers
What is the primary function of the heart in the circulatory system?
What is the primary function of the heart in the circulatory system?
- To filter waste from the blood
- To pump blood throughout the body (correct)
- To exchange gases with the lungs
- To regulate body temperature
Which side of the heart is responsible for delivering oxygen-rich blood to the body?
Which side of the heart is responsible for delivering oxygen-rich blood to the body?
- Both sides equally
- Right side
- Left side (correct)
- Upper chamber
What happens to the heart rate during exercise?
What happens to the heart rate during exercise?
- It decreases significantly
- It stops temporarily
- It pumps blood faster (correct)
- It remains the same as at rest
How does the circulatory system relate to the respiratory system?
How does the circulatory system relate to the respiratory system?
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How often does the heart pump when a person is resting?
How often does the heart pump when a person is resting?
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Study Notes
Overview of the Circulatory System
- The circulatory system is comprised of the heart and blood vessels.
- Its primary function is to transport blood throughout the body.
Function of the Heart
- The heart pumps both oxygen-rich and oxygen-poor blood.
- The left side of the heart receives oxygen-rich blood from the lungs and distributes it to the body.
- The right side of the heart pumps oxygen-poor blood to the lungs for re-oxygenation.
Heart Rate
- Under resting conditions, the heart beats between 60-100 times per minute.
- During physical activity, the heart rate increases significantly to supply more oxygenated blood to the muscles.
Interaction with the Respiratory System
- The circulatory system works closely with the respiratory system to ensure oxygen delivery.
- While the heart circulates oxygen to muscles, the respiratory system is responsible for oxygen intake.
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