Respiratory And Circulatory System Quiz With Answers

Reviewed by Farah Naz
Farah Naz, MBBS, Medicine |
Medical Expert
Review Board Member
Farah holds a Bachelor of Medicine and Bachelor of Surgery (MBBS) from Dow University of Health Sciences. She gained valuable experience through internships in Radiology, Cardiology, and Neurosurgery, and has contributed to two research publications in medical journals. Passionate about healthcare education, Farah excels in crafting medical content, including articles, literature reviews, and e-learning courses. Leveraging her expertise, she meticulously reviews medical science quizzes, ensuring accuracy and educational value for aspiring healthcare professionals.
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Respiratory And Circulatory System Quiz With Answers - Quiz

The respiratory system is responsible for taking in oxygen and expelling carbon dioxide. Take this quiz on "respiratory and circulatory systems with answers" and gauge your conceptual knowledge of the topic. In your school, you also learned about the circulatory system and the blood vessels that help transport it across the body's parts.

With each question, you'll uncover intriguing facts and gain deeper insights into the respiratory and circulatory systems. Perfect for enhancing your knowledge or as a fun educational tool, this quiz promises a learning experience that's as informative as it is enjoyable. Get ready to challenge yourself and Read morelearn something new! By taking the quiz below, you can see how much you know about these two systems and their functions. If you like this quiz, share it with your friends and family. All the best!


Respiratory And Circulatory System Questions and Answers

  • 1. 

    What system is the heart of?

    • A.

      Circulatory

    • B.

      Respiratory

    • C.

      Excretory

    • D.

      Reproductive

    Correct Answer
    A. Circulatory
    Explanation
    The heart is the central organ of the circulatory system. It pumps blood throughout the body, delivering oxygen and nutrients to the cells and removing waste products. The circulatory system consists of the heart, blood vessels, and blood, and it plays a crucial role in maintaining homeostasis and supporting the functions of other organ systems.

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  • 2. 

    The circulatory system transfers blood throughout the body

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The circulatory system is responsible for transporting blood throughout the body, delivering oxygen, nutrients, and hormones to various tissues and organs. It consists of the heart, blood vessels, and blood. The heart pumps oxygenated blood from the lungs to the rest of the body through arteries, while veins carry deoxygenated blood back to the heart. This continuous circulation ensures that all cells receive the necessary substances for their proper functioning. Therefore, the statement "The circulatory system transfers blood throughout the body" is true.

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  • 3. 

    What does the respiratory system do?

    • A.

      Help you play games

    • B.

      Help you pump blood

    • C.

      Help you breath

    • D.

      Help you eat

    Correct Answer
    C. Help you breath
    Explanation
    The respiratory system is responsible for the exchange of gasses, specifically oxygen and carbon dioxide, between the body and the environment. It consists of organs such as the lungs, trachea, and diaphragm, which work together to facilitate the process of breathing. The respiratory system helps in inhaling oxygen and exhaling carbon dioxide, ensuring that the body receives the necessary oxygen for cellular respiration and removes waste gasses.

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  • 4. 

     The respiratory systems work together

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The respiratory systems consist of various organs and tissues that work together to facilitate the exchange of oxygen and carbon dioxide in the body. These include the nose, trachea, bronchi, and lungs. Each component plays a crucial role in the process of breathing and maintaining the body's oxygen levels. Therefore, it is correct to say that the respiratory systems work together.

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  • 5. 

    The stomach is part of your respiratory system

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The statement is false because the stomach is not part of the respiratory system. The respiratory system is responsible for the exchange of gasses, primarily oxygen and carbon dioxide, in the body. It includes organs such as the lungs, trachea, and bronchi. The stomach, on the other hand, is part of the digestive system, which is responsible for the breakdown and absorption of food. These two systems have different functions and are not interconnected in terms of anatomy or physiology.

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  • 6. 

    The right lung is larger than the left slightly

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The right lung is larger than the left slightly due to the anatomical positioning of the heart. The heart is located slightly to the left side of the chest, which causes the left lung to be smaller in order to accommodate the heart. The right lung has three lobes, while the left lung only has two lobes, further contributing to the size difference.

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  • 7. 

    Do hairs in the nose help to clean air?

    • A.

      Yes

    • B.

      No

    Correct Answer
    A. Yes
    Explanation
    Hairs in the nose help to clean the air by trapping dust, pollen, and other particles that may be present in the air we breathe. These hairs act as a filter, preventing these particles from entering further into the respiratory system. This helps to protect the lungs from potential irritants and allergens, ensuring that the air we inhale is cleaner and healthier.

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  • 8. 

    What is the primary function of the pulmonary artery in the context of the respiratory and circulatory systems?

    • A.

      It carries oxygenated blood from the lungs to the heart.

    • B.

      It carries deoxygenated blood from the heart to the lungs.

    • C.

      It carries oxygenated blood from the heart to the rest of the body.

    • D.

      It carries deoxygenated blood from the lungs to the heart.

    Correct Answer
    B. It carries deoxygenated blood from the heart to the lungs.
    Explanation
    The pulmonary artery plays a crucial role in the human body by transporting deoxygenated blood from the right ventricle of the heart to the lungs. This is unique among arteries as it is one of the few that carries deoxygenated blood; most arteries carry oxygenated blood. In the lungs, carbon dioxide is expelled, and oxygen is absorbed during the process of gas exchange. The reoxygenated blood then returns to the heart via the pulmonary veins, which unlike the pulmonary artery, carry oxygen-rich blood back to the left atrium. This cycle is vital for maintaining the oxygenation of blood and the removal of carbon dioxide, which are essential processes for cellular metabolism and overall physiological health.

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  • 9. 

    The breathing rate in adults is faster than children

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The statement is false because the breathing rate in children is actually faster than in adults. Children have a higher metabolic rate and their lungs are still developing, so they require more oxygen and need to breathe at a faster rate to meet their body's needs. As children grow and their lungs mature, their breathing rate gradually slows down to match that of adults.

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  • 10. 

    How many times does an average person's heart beats in their lifetime?

    • A.

      2 million

    • B.

      1 thousand

    • C.

      20 billion

    • D.

      3 billion

    Correct Answer
    D. 3 billion
    Explanation
    The average person's heart beats around 60 to 100 times per minute, which amounts to approximately 86,400 to 144,000 beats per day. Considering an average lifespan of around 70 years, the heart would beat around 2.5 to 4 billion times in a lifetime. Therefore, the answer of 3 billion falls within this range and is a reasonable estimate for the number of times an average person's heart beats in their lifetime.

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  • 11. 

    Within a tiny droplet of blood how many blood cells are there?

    • A.

      50 million

    • B.

      10 thousand

    • C.

      5 million

    • D.

      1 billion

    Correct Answer
    C. 5 million
    Explanation
    Within a tiny droplet of blood, there are approximately 5 million blood cells.

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  • 12. 

    About 8 million blood cells die in the human body every second

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    This statement is true because the human body constantly produces and replaces blood cells. The average lifespan of a red blood cell is around 120 days, so approximately 8 million red blood cells die every second. Additionally, white blood cells also have a limited lifespan and die regularly. Therefore, it is accurate to say that about 8 million blood cells die in the human body every second.

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Farah Naz |MBBS, Medicine |
Medical Expert
Farah holds a Bachelor of Medicine and Bachelor of Surgery (MBBS) from Dow University of Health Sciences. She gained valuable experience through internships in Radiology, Cardiology, and Neurosurgery, and has contributed to two research publications in medical journals. Passionate about healthcare education, Farah excels in crafting medical content, including articles, literature reviews, and e-learning courses. Leveraging her expertise, she meticulously reviews medical science quizzes, ensuring accuracy and educational value for aspiring healthcare professionals.

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  • Current Version
  • May 10, 2024
    Quiz Edited by
    ProProfs Editorial Team

    Expert Reviewed by
    Farah Naz
  • Apr 11, 2012
    Quiz Created by
    Bologna Bill
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