Lesson 1
Breathing is an _______ action
involuntary
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Nasal cavity
The _______ is the dome-shaped muscle that works with your lungs to help you breathe.
Diaphragm
Another name for the _______ is the voice box, which holds the vocal cords.
larynx
___________ is a green, leafy plant that can be used to make cigarettes, cigars, and chewing tobacco.
Tobacco
When you exercise, your respiration rate _______.
increases
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Diaphragm
Another name for the ______ is the windpipe.
Trachea
Hold your hand over your throat while speak, and you will feel ________.
Vibrations
The addictive chemical inside cigarettes and tobacco is ______.
Nicotine
Your ________ rate is your number of respirations in a minute.
breathing
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Lungs
The _______ are the two tubes that provide a pathway to the lungs.
bronchi
The two tiny ridges across your voice box are called ________ of your vocal cords.
Vocal cords
The ______ in cigarettes can damage a person's cilia.
Tar
An involuntary action is an action that occurs without ________.
thought
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Bronchi
The ________ are the tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide take place.
Alveoli
You can change the pitch of your voice by changing the _______ and ______ of your vocal cords.
length and thickness
_______ is the inflammation of the bronchial tubes.
Bronchitis
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Larynx
The ________ are the tiny hairs that keep dust and dirt out of the lungs.
Cilia
The amount of air you exhale determines how _______ a sound will be and how long you can make the sound.
Loud
_______ is a lung disease that blocks airflow and makes breathing difficult.
Emphysema