Air enters the respiratory system through the ___________.
The Nostrils
100
Which body system removes water vapor and waste gases from the body's blood?
The respiratory system
100
This ingredient of combustion is also an ingredient of cellular respiration.
Oxygen
100
The primary function of the respiratory system is obtaining oxygen and removing_____________.
carbon dioxide.
200
Alveoli are attached to these structures.
Bronchioles
200
The respiratory system helps you produce sounds when air moves over _____________.
your vocal cords
200
The amount of air that a person can forcibly exhale after taking a deep breath is his/her __________.
Vital Capacity
200
When you exhale onto a glass surface, the surface becomes cloudy with a thin film of moisture. Why?
Because water is given off during respiration. When air is exhaled, water vapor condenses on the glass surface.
300
The voice box is also known as the ________.
Larynx
300
This contracts and moves downward when you inhale
The diaphragm
300
This process allows oxygen and carbon dioxide to pass easily through the wall of an alveoli.
Diffusion
300
How does the respiratory system help the skeletal system?
It provides oxygen for energy for repair and growth.
400
Each alveolus is surrounded by ________.
Capillaries
400
True or false: The respiratory system helps you to speak and sing
True
400
Vital capacity and Residual volume are equal to ________.
Lung Capacity
400
If you have allergies, you know your _______________________ can swell and prevent your sinuses from draining, causing pressure to build and give you a sinus headache.
The mucous membrane
500
If you didn't have _______________ your lungs could collapse and there may not be enough air remaining in the alveoli for gas exhange.
Residual volume of air in your lungs
500
This branches to make two smaller tubes called bronchi, which direct air into the lungs.
The trachea
500
True or False: The syringe model of breathing shows that air surrounds the lungs.
False
500
How does coughing and sneezing help the respiratory system?
To clean the respiratory tract by forcing particles out