Respiratory System TQ

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    The Respiratory System

    Thinking Questions

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    What is the main function of the

    respiratory system?

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    What is the main function of the respiratory system?

    Supplies O 2 (Oxygen) to the blood

    and removes CO 2 (Carbondioxide) from the blood

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    How are oxygen, carbon dioxide,and other waste gases

    exchanged in the lungs and bodytissues?

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    How are oxygen, carbondioxide, and other waste gases

    exchanged in the lungs andbody tissues?

    Oxygen, carbon dioxide, and other

    waste gases are exchanged bydiffusion between body cells andblood

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    What causes air to move into

    and out of a person's lungs?

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    What causes air to move intoand out of a person's lungs?

    The movement of the diaphragm

    and rib cage creates a change inair pressure

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    How is the work of the digestivesystem related to the respiratory

    system?

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    How is the work of the

    digestive system related to therespiratory system?

    The digestive system provides glucose(from carbohydrates) needed for cellular

    respiration. The respiratory systemprovides the oxygen need for cellular

    respiration.

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    Why do capillaries surround

    alveoli?

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    How is the work of the

    digestive system related to therespiratory system?

    The digestive system provides glucose(from carbohydrates) needed for cellular

    respiration. The respiratory systemprovides the oxygen need for cellular

    respiration.

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    Why do capillaries surround

    alveoli?

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    Why do capillaries surroundalveoli?

    So that oxygen and carbon dioxide canbe exchanged easily by diffusion through

    the cell membranes.

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    How are lungs excretoryorgans?

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    How are lungs excretoryorgans?

    They release waste products (carbondioxide and excess water).

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    How does the oxygen in the

    alveoli get to the body cells?

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    How does the oxygen in thealveoli get to the body cells?

    Oxygen diffuses into capillaries, where itis picked up by hemoglobin and taken in

    the bloodstream to all body cells

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    You have just finished joggingfor 10 minutes and your chest is

    heaving. Why?

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    You have just finished jogging

    for 10 minutes and your chestis heaving. Why?

    The body uses more oxygen duringexercise. Your lungs inhale and exhale

    faster when you exercise to give your body cells more oxygen.

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    Why do cells need oxygen?

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    Why do cells need oxygen?

    Cells need oxygen to release energy fromglucose (cellular respiration).

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    Explain the difference between

    respiration and breathing.

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    Explain the difference betweenrespiration and breathing.

    Breathing is the process in which air moves into and out of lungs. Respiration

    is the process in which oxygen is used torelease energy from the glucose in cells.

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    How does your diaphragm

    contracting help in inhaling?

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    How does your diaphragmcontracting help in inhaling?

    When muscles contract, they becomesmaller and pull. The diaphragm

    contracts and moves down, creating abigger space in the chest cavity for air to

    fill the lungs.