2003896
Frage 1
Frage
Which substances are produced during respiration?
Antworten
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carbon dioxide and water
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water and oxygen
Frage 2
Frage
Where in the respiratory system does gas exchange occur?
Antworten
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in the heart
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in the alveoli
Frage 3
Frage
The role of the respiratory system is to bring what substance into the body?
Antworten
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water
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oxygen
Frage 4
Frage
The role of the respiratory system is to bring what substance into the body?
Antworten
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water
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oxygen
Frage 5
Frage
The dome-shaped muscle that plays an important role in breathing is the
Antworten
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diaphragm
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alveolus
Frage 6
Frage
What happens to cause air to be exhaled from the lungs?
Antworten
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The chest cavity expands and grows larger.
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The diaphragm relaxes and moves upward.
Frage 7
Frage
Which chemical in tobacco smoke binds to hemoglobin, causing red blood to carry less than their normal load of oxygen?
Antworten
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nicotine
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carbon monoxide
Frage 8
Frage
Which chemical in tobacco smoke is an addictive drug?
Antworten
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tar
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nicotine
Frage 9
Frage
Over time, smoking can irritate the breathing passages, which may become clogged with mucus. This condition is called
Antworten
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bronchitis
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emphysema
Frage 10
Frage
What term do scientists use to describe the chemical process in which oxygen and glucose react to release energy inside body cells?
Antworten
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respiration
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breathing
Frage 11
Frage
Which chemical in tobacco smoke may damage cilia in the respiratory system?
Antworten
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tar
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nicotine
Frage 12
Frage
During gas exchange, which substance moves from the alveoli into the blood?
Antworten
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carbon dioxide
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oxygen
Frage 13
Frage
How can smoking lead to emphysema?
Antworten
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by destroying lung tissue
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by slowing the heart rate
Frage 14
Frage
What is the name of the small flap of tissue that seals off the trachea during swallowing?
Antworten
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epiglottis
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larynx
Frage 15
Frage
Which parts of the respiratory system divide into smaller and smaller tubes in a pattern that resembles the branches of a tree?
Antworten
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trachea
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bronchi
Frage 16
Frage
Hairlike structures that line the nasal cavities and trachea are called
Antworten
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Cilia
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mucus
Frage 17
Frage
Each alveolus is surrounded by a network of
Antworten
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arteries
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capillaries
Frage 18
Frage
What produces a person's voice?
Antworten
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the lungs
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the vocal cords
Frage 19
Frage
The vocal cords stretch across the opening of the
Antworten
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diaphragm
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larynx
Frage 20
Frage
What does nicotine do to the body?
Antworten
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It increases blood pressure
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It slows the heartbeat
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