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Respiratory System Test Answers

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(verb) to keep under control; prevent from doing something
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restrain
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exchange oxygen from the air with C02 from the blood
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respiratory system
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generally the first entrance of air into the chest cavity
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nasal cavity
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two things which happen to the air upon entering the nasal cavity
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warmed and filtered
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secretes sticky mucus that traps dust particles and other foreign substances found in the air
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mucous membrane
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the passageway of air after leaving the nasal cavity
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pharynx and larynx
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the windpipe
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trachea
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what the trachea branches into
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right and left bronchi
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singular for bronchi
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bronchus
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allows the air to enter the two lungs
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bronchi
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houses the two lungs
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thoracic cavity
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slightly larger than the left
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right lung
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associated with the right lung only
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three lobes
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associated with the left lung only
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two lobes
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the slippery membrane covering the lungs
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pleura
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average number of breaths for most normal humans
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16 breaths per minute
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consists of about 300 million of these tiny air sacs
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number of alveoli
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allow for the exchange of oxygen and carbon dioxide between your blood and the air
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function of the alveoli
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air enters the aveoli
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what happens when you inhale?
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from the alveoli into the surrounding blood capillaries and carried by the blood to every part of the body
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oxygen's movement
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from the body cells is released from the blood into the alveoli and travels up your respiratory tubes as you exhale
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carbon dioxide movement
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the muscle that helps you breath by contracting to create more space in your thoracic cavity
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diaphram
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signals the diaphragm muscle to contract
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phrenic nerve