April 21st, 2020 The Respiratory System (Tubes, Pathways, & Lungs

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Directions: ANSWER USING COMPLETE SENTENCES! Use the information you have been given to answer questions about: The Respiratory System

Level#1: Inhaled air moves into your throat. Both air and food pass down the throat. Food continues through it to another tube that leads to the stomach. Next, air moves into the trachea. The trachea, or windpipe, brings air from your throat into your lungs. When you swallow a flap of tissue, called the epiglottis, closes. It keeps food and liquids out of the trachea.

1. What is the epiglottis and what does it do?






2. What does the trachea do?





3. Where does air go after it leaves the throat?









Level#2: Inhaled air moves into your throat. Both air and food pass down the throat. Food continues through it to another tube that leads to the stomach. Next, air moves into the trachea. The trachea, or windpipe, brings air from your throat into your lungs. When you swallow a flap of tissue, called the epiglottis, closes. It keeps food and liquids out of the trachea. The trachea divides into two smaller tubes. These smaller tubes are called bronchi. Each of these tubes (bronchus) goes into a lung. Air moves through these small tubes and into your lungs. You have two lungs. They are big, spongy organs. In each lung, the bronchus branches into smaller and smaller tubes. These tubes end in millions of tiny air sacs. These air sacs are called alveoli.

1. What is the name of the tubes the trachea divides into and where do they go?





2. How many bronchi do we have and where does each bronchus lead to?





3. Describe the lungs.






Level#3: Inhaled air moves into your throat. Both air and food pass down the throat. Food continues through it to another tube that leads to the stomach. Next, air moves into the trachea. The trachea, or windpipe, brings air from your throat into your lungs. When you swallow a flap of tissue, called the epiglottis, closes. It keeps food and liquids out of the trachea. The trachea divides into two smaller tubes. These smaller tubes are called bronchi. Each of these tubes (bronchus) goes into a lung. Air moves through these small tubes and into your lungs. You have two lungs. They are big, spongy organs. In each lung, the bronchus branches into smaller and smaller tubes. These tubes end in millions of tiny air sacs. These air sacs are called alveoli. In these sacs, gases are exchanged. Oxygen passes into capillaries. The waste gas carbon dioxide passes from the blood into the air sacs. You get rid of carbon dioxide when you breathe out, or exhale.

1. Describe the lungs.






2. Explain what each lung has in it and what it is called.






3. Explain what goes on in the air sacs called alveoli.








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