Functions
What process allows oxygen to enter the blood and carbon dioxide to leave the body?
What is gas exchange?
What muscle pulls downward to allow the lungs to expand?
What is the diaphragm?
What is the common name for the trachea?
What is the windpipe?
About how many pints of air do you breathe in every minute?
What is 13 pints?
What are vocal cords also called?
What are vocal folds?
What gas is taken into the body during inhalation?
What is oxygen?
When the diaphragm contracts, does air pressure inside the body increase or decrease?
What is decrease?
Which structure prevents food from entering the airway when swallowing?
What is the epiglottis?
Your lungs contain over how many million alveoli?
What is 300 million?
The vocal cords are located in what structure?
What is the larynx?
What waste gas is removed from the body during exhalation?
What is carbon dioxide?
Air moves into the lungs during inhalation because outside air pressure is __________.
What is greater than inside pressure?
What tiny air sacs in the lungs allow gas exchange with the blood?
What are alveoli?
Your lungs have almost how many miles of airways?
What is 1,500 miles?
Vocal cords vibrate to produce what?
What is sound (speech or singing)?
The respiratory system helps maintain what balance in the body?
What is acid-base balance (homeostasis)?
What happens to the chest cavity when the diaphragm relaxes?
What is it gets smaller?
What tube carries air from the throat into the lungs?
What is the trachea?
Which lung has three lobes: left or right?
What is the right lung?
During inhalation, vocal cords are __________.
What is open?
The respiratory system exchanges gases between the environment and which body system?
What is the circulatory system?
Breathing occurs due to changes in __________ and __________ inside the body.
What are space and pressure?
What structure connects the throat to the lungs and contains the vocal cords?
What is the larynx?
Alveoli provide a large surface area mainly for what purpose?
What is gas exchange?
Why do vocal cords appear white in color?
What is limited blood circulation?