G4_Science_2QPreLims_Lesson 1_The Respiratory System

Respiratory System 

The human respiratory system performs the important function of exchanging gases. It helps you get oxygen for energy and remove waste gases such as carbon dioxide. The lungs are essential organs of the respiratory system because they transport oxygen to the blood and remove carbon dioxide. The diaphragm, a muscle below the lungs, helps us breathe by pulling air in and pushing air out during gas exchange.

• read

• ignored

Respiratory System 

The human _______________ performs the important function of exchanging gases. It helps you get oxygen for energy and remove waste gases such as carbon dioxide. The lungs are essential organs of the respiratory system because they transport oxygen to the blood and remove carbon dioxide. The diaphragm, a muscle below the lungs, helps us breathe by pulling air in and pushing air out during gas exchange.

Respiratory System 

The human respiratory system performs the important function of exchanging gases. It helps you get oxygen for energy and remove waste gases such as carbon dioxide.

The ____________are essential organs of the respiratory system because they transport oxygen to the blood and remove carbon dioxide.

The diaphragm, a muscle below the lungs, helps us breathe by pulling air in and pushing air out during gas exchange.

• lungs

• diaphragm

Respiratory System 

The human respiratory system performs the important function of exchanging gases. It helps you get oxygen for energy and remove waste gases such as carbon dioxide.

The lungs are essential organs of the respiratory system because they transport oxygen to the blood and remove carbon dioxide.

The ______________, a muscle below the lungs, helps us breathe by pulling air in and pushing air out during gas exchange.

• lungs

• diaphragm

Respiratory System 

When you breathe in or inhale, air enters your nose or mouth As it goes through your nose, the air gets warmed, moistened, and filtered to remove any unwanted particles such as dust and allergens. The air then moves down through the trachea, bronchi, and into your lungs.

• read

• ignored

Respiratory System 

When you breathe in or inhale, air enters your ________________. As it goes through your nose, the air gets warmed, moistened, and filtered to remove any unwanted particles such as dust and allergens. The air then moves down through the trachea, bronchi, and into your lungs.

• nose or mouth

• eyes and ears

Respiratory System 

When you breathe in or inhale, air enters your nose or mouth. As it goes through your nose, the air gets warmed, moistened, and filtered to remove any unwanted particles such as dust and allergens. The air then moves _________ through the trachea, bronchi, and into your lungs.

• up

• down

Respiratory System 

The trachea, or windpipe, carries oxygen to your lungs through the bronchi. These bronchi tubes are lined with mucus to keep them moist and trap bacteria, viruses, and other particles to protect your lungs and prevent infections.

• read

• ignored

Respiratory System 

The _________________ , carries oxygen to your lungs through the bronchi. These bronchi tubes are lined with mucus to keep them moist and trap bacteria, viruses, and other particles to protect your lungs and prevent infections.

• ear and nose

• trachea, or windpipe

Respiratory System 

The trachea, or windpipe, carries oxygen to your lungs through the ___________. These bronchi tubes are lined with mucus to keep them moist and trap bacteria, viruses, and other particles to protect your lungs and prevent infections.

• brocolli

• bronchi