Nose or mouth
tiny air sacs in the lungs
alveoli
diaphragm and chest muscles
What is number 1?

epiglottis
Which part of the body controls breathing?
Brain
also called the windpipe
trachea
also called the voice box
larynx
What is number 2?

larynx
When the lungs become infected, a person has
pnuemonia
also called the throat
pharynx
Which part of the respiratory system is a strong, curved muscle attached below the lungs to the lower ribs and backbone?
diaphragm
What is number 3?
trachea
Where does the exchange of oxygen and carbon dioxide take place?
alveoli
Which respiratory distress often causes the muscles around the bronchial tubes to tighten more than normal, making it hard for a person to breathe?
Asthma
The pitch of a sound that you make depends on the length and ______ of your vocal cords.
thickness
What is number 4?

nose
In order to function and live every cell needs
Irritation of the lining of the airways causes air to be violently released through the nose in a
sneeze
Which parts of the respiratory system are saclike organs that replace the CO2 in you blood with oxygen?
lungs
What is number 5?

bronchi
How is inhaling different from exhaling?
Inhale- take in oxygen
Exhale- breathing out carbon dioxide
tiny blood vessels that surround the alveoli
capillaries
Which part of the respiratory system is the flap of tissue that covers the trachea when a person swallows?
epiglottis
What is number 6?

pharynx
The sound causes by air that cannot move freely and causes part of the mouth and throat to vibrate and hit together is called a
snore
tubes that branch off the trachea
bronchi
Cells use oxygen and produce
Carbon dioxide
What is number 7?

lungs
Why is smoking harmful?
Smoke contains poisonous chemicals that harm the lungs and other parts of the body. Keep Cilia and alveoli from working properly. Forms tar in the lungs.
tiny hair-like structures that line the nasal passages and respiratory system
cilia
Breathing that you can think about and control for a short amount of time is called _______ breathing.
voluntary
What is number 8?

mouth