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