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Respiratory System. Question: How are particles of foreign matter expelled from the respiratory system?

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Presentation on theme: "Respiratory System. Question: How are particles of foreign matter expelled from the respiratory system?"— Presentation transcript:

1 Respiratory System

2 Question: How are particles of foreign matter expelled from the respiratory system?

3 Respiratory System Main function is to supply oxygen to the body and remove carbon dioxide and water.

4 What is the difference between breathing and respiration? Breathing Movement of the chest that brings air into the body through the lungs Respiration Chemical reaction used by cells to release energy from glucose Produces CO 2 and H 2 O as waste products

5 Organs of the respiratory system The nose- Air enters the body through the nose into the nasal cavities which are lined with cilia- tiny hair-like projections that move together in a sweeping motion.

6 Organs of the respiratory system The Pharynx- air enters the pharynx (a.k.a. the throat), a tube-like passage way also used by food and liquid Contains the vocal chords

7 Organs of the respiratory system The trachea- tube held open by rings of cartilage – called the wind pipe Lined with cilia and mucous Epiglottis- small flap of tissue that folds over the trachea and prevents food or liquid from entering.

8 Organs of the respiratory system Bronchi and Lungs- Bronchi are passages that direct air into the lungs. Lungs are the main organ of the respiratory system. Bronchioles are the smallest tubes of the bronchi that end in clusters called aveoli- tiny sacs of tissue that specialize in the movement of gasses between the blood and air.

9 Create a multi-layer foldable Outside of the foldable Inside the foldable

10 Respiratory System Foldable Glue down on page. Attach the Pharynx to the Bronchi. Add the following information. Bronchi- main passage way into lungs Alveoli- Functional units of lungs that permit gas exchange. Found in small clusters at the end of the bronchioles.

11 Respiratory System Foldable Glue along dotted edges. Write the functions or the ribcage under the flaps. The rib cage has 3 important functions: 1) Protection- protects heart and lungs 2) Support- provides strong framework for muscles to attach 3) Respiration- flexible can expand and contract by the action of the muscles

12 Respiratory System Foldable Glue on the dotted edges. Write the following information under the flap: The human lungs are a pair of large, spongy organs optimized for gas exchange between our blood and the air. Our bodies require oxygen in order to survive. The lungs provide us with the vital oxygen while also removing carbon dioxide before it can reach hazardous levels. If the inner surface of the lungs could be stretched out flat they would occupy an area of square meters about the size of half a tennis court.


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