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The Respiratory System Thinking Questions. What is the main function of the respiratory system?

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Presentation on theme: "The Respiratory System Thinking Questions. What is the main function of the respiratory system?"— Presentation transcript:

1 The Respiratory System Thinking Questions

2 What is the main function of the respiratory system?

3 Supplies O 2 (Oxygen) to the blood and removes CO 2 (Carbon dioxide) from the blood

4 How are oxygen, carbon dioxide, and other waste gases exchanged in the lungs and body tissues?

5 Oxygen, carbon dioxide, and other waste gases are exchanged by diffusion between body cells and blood

6 What causes air to move into and out of a person's lungs?

7 The movement of the diaphragm and rib cage creates a change in air pressure

8 How is the work of the digestive system related to the respiratory system?

9 The digestive system provides glucose (from carbohydrates) needed for cellular respiration. The respiratory system provides the oxygen need for cellular respiration.

10 Why do capillaries surround alveoli?

11 How is the work of the digestive system related to the respiratory system? The digestive system provides glucose (from carbohydrates) needed for cellular respiration. The respiratory system provides the oxygen need for cellular respiration.

12 Why do capillaries surround alveoli?

13 So that oxygen and carbon dioxide can be exchanged easily by diffusion through the cell membranes.

14 How are lungs excretory organs?

15 They release waste products (carbon dioxide and excess water).

16 How does the oxygen in the alveoli get to the body cells?

17 Oxygen diffuses into capillaries, where it is picked up by hemoglobin and taken in the bloodstream to all body cells

18 You have just finished jogging for 10 minutes and your chest is heaving. Why?

19 The body uses more oxygen during exercise. Your lungs inhale and exhale faster when you exercise to give your body cells more oxygen.

20 Why do cells need oxygen?

21 Cells need oxygen to release energy from glucose (cellular respiration).

22 Explain the difference between respiration and breathing.

23 Breathing is the process in which air moves into and out of lungs. Respiration is the process in which oxygen is used to release energy from the glucose in cells.

24 How does your diaphragm contracting help in inhaling?

25 When muscles contract, they become smaller and pull. The diaphragm contracts and moves down, creating a bigger space in the chest cavity for air to fill the lungs.


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