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