Respiratory System - Science Project 9 Grade

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| By Jdrechsler
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  • 1/12 Questions

    What is the first part of the respiratory system?

    • Pharynx
    • Larynx
    • Mouth
    • Nose
    • Trachea
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Quiz elaborated by 9 graders under a project about the Respiratory System

Respiratory System - Science Project 9 Grade - Quiz

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  • 2. 

    What are Bronchioles?

    • Subdivisions of bronchi

    • Part of the trachea

    • Where gas exchanges happen

    • Cartilages of the larynx

    • Parts of the diaphragm

    Correct Answer
    A. Subdivisions of bronchi
    Explanation
    Bronchioles are small airways in the lungs that branch off from the bronchi. They are responsible for further dividing the air passages and delivering air to the alveoli, where gas exchanges occur. The bronchioles do not belong to the trachea, larynx, or diaphragm, but are instead subdivisions of the bronchi.

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  • 3. 

    The primary muscle responsible for breathing in the respiratory system is the __________.

    Correct Answer
    diaphragm, Diaphragm
    Explanation
    The diaphragm is a dome-shaped muscle located below the lungs. When it contracts, it flattens and creates more space in the chest cavity, allowing the lungs to expand and fill with air. This process is called inhalation. During exhalation, the diaphragm relaxes and returns to its dome shape, pushing air out of the lungs. It is the main muscle involved in breathing.

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  • 4. 

    What internal respiration serves for?

    • Generate Carbon Dioxide

    • Generate Carbon Monoxide

    • Generate ATP

    • Generate nails

    • Generate the trachea

    Correct Answer
    A. Generate ATP
    Explanation
    Internal respiration serves to generate ATP. ATP is the main energy currency of the cell and is required for various cellular processes. During internal respiration, oxygen is delivered to the cells and used in the process of cellular respiration to produce ATP. This occurs in the mitochondria of the cells, where glucose and oxygen are metabolized to produce ATP through a series of chemical reactions. Therefore, internal respiration is essential for providing the necessary energy for cellular activities.

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  • 5. 

    What is the normal number of breaths per minute?

    • 12 to 16 with 2 seconds separation

    • 30 to 35 with 4 seconds separation

    • 10 to 18 with 2 seconds separation

    • 5 to 8 with 5 seconds separation

    • 10 to 18 with 4 seconds separation

    Correct Answer
    A. 10 to 18 with 2 seconds separation
    Explanation
    The normal number of breaths per minute is typically between 10 to 18 with a 2-second separation. This range is considered normal for a healthy adult at rest. The 2-second separation refers to the duration between each breath.

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  • 6. 

    The respiratory system is a part of the

    Correct Answer
    autonomic nervous system
    Explanation
    The autonomic nervous system is responsible for controlling involuntary bodily functions, including the respiratory system. The respiratory system consists of organs and tissues involved in the exchange of gases, such as the lungs and diaphragm. These organs are regulated by the autonomic nervous system, which controls breathing rate and depth based on the body's needs. Therefore, it is correct to say that the respiratory system is a part of the autonomic nervous system.

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  • 7. 

    It is controlled by parts of pons, bainstem and

    Correct Answer
  • 8. 

    The acessory muscles of the respiratory system are

    Correct Answer
    they are sternocledomastoid, platysma and scalene muscles of the neck
    Explanation
    The accessory muscles of the respiratory system are the sternocleidomastoid, platysma, and scalene muscles of the neck. These muscles are not directly involved in the normal breathing process but are recruited during times of increased respiratory demand or when the primary breathing muscles are compromised. The sternocleidomastoid muscle helps elevate the sternum and rib cage during deep inhalation, while the platysma muscle assists in elevating the hyoid bone and opening the airway. The scalene muscles aid in elevating the upper ribs and expanding the chest cavity during forced inhalation.

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  • 9. 

    Why is the respiratory system important?

  • 10. 

    What does this experiment represents in the respiratory system

  • 11. 

    Explain how the respiratory system works

  • 12. 

    Why is it better to breathe by the nose than by the mouth?

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  • Jun 24, 2025
    Quiz Edited by
    ProProfs Editorial Team
  • Jun 03, 2009
    Quiz Created by
    Jdrechsler
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