Respiratory System TQ
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Transcript of 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.