SCIENCE5 Q2 2. identify from pictures and diagrams the parts of the respiratory system -.pptx

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1. Exploring the Respiratory System

2. Introduction to the Respiratory System The respiratory system helps us breathe It brings oxygen into our body and removes carbon dioxide We'll learn about three main parts: nose, windpipe, and lungs Can you take a deep breath right now? Feel your chest move!

3. The Nose: Our Air Entrance The nose is where air enters our body It filters, warms, and moistens the air we breathe Inside your nose are tiny hairs called cilia What do you think these hairs do?

4. Functions of the Nose Filters out dust and germs Warms cold air to body temperature Adds moisture to dry air Helps us smell things Can you breathe in through your nose slowly? What do you notice?

5. The Windpipe: Air's Highway Also called the trachea It's a tube that carries air to and from the lungs About 4 inches long in kids Lined with more cilia to catch dust and germs

6. How the Windpipe Works Acts like a pipe for air to travel Cilia move like tiny waves to push out unwanted particles Has rings of cartilage to keep it open Why do you think it's important for the windpipe to stay open?

7. The Lungs: Oxygen Exchangers Two spongy organs in your chest Left lung is slightly smaller to make room for your heart Filled with millions of tiny air sacs called alveoli Where oxygen enters your blood and carbon dioxide leaves

8. Inside the Lungs Bronchi: larger air tubes in the lungs Bronchioles: smaller air tubes Alveoli: tiny air sacs where gas exchange happens Can you put your hand on your chest and feel it move as you breathe?

9. How the Lungs Work Expand when you breathe in (inhale) Contract when you breathe out (exhale) Exchange oxygen for carbon dioxide in the blood Work with your diaphragm, a muscle below the lungs

10. The Amazing Alveoli Tiny air sacs in the lungs So small that millions fit in each lung Have very thin walls to let gases pass through Surrounded by tiny blood vessels If you could line up all your alveoli, how far do you think they would stretch?

11. Breathing: Putting It All Together Air enters through the nose or mouth Travels down the windpipe Goes into the lungs through bronchi and bronchioles Reaches the alveoli where oxygen enters the blood Carbon dioxide leaves the blood and we breathe it out

12. The Diaphragm: Breathing's Helper Large, dome-shaped muscle below the lungs Flattens when you breathe in, making room for lungs to expand Relaxes when you breathe out Try taking a deep breath. Can you feel your diaphragm move?

13. Keeping Your Respiratory System Healthy Exercise regularly to strengthen your lungs Avoid smoking and secondhand smoke Wash your hands to prevent germs from entering your system Breathe through your nose to filter air What are some exercises you can do to keep your lungs healthy?

14. Fun Breathing Facts You take about 20,000 breaths a day! Plants help clean the air we breathe Hiccups are caused by your diaphragm contracting Yawning might help cool your brain Can you count how many breaths you take in one minute?

15. Respiratory System Helpers Ribs protect the lungs Mucus traps dust and germs Epiglottis stops food from entering the windpipe Coughing and sneezing help remove irritants Why do you think it's important to cover your mouth when you cough or sneeze?

16. Nose

17. Animals and Breathing Fish use gills to breathe underwater Frogs can breathe through their skin Birds have air sacs in addition to lungs Insects breathe through tiny holes in their body called spiracles Can you think of other animals with interesting ways of breathing?

18. Respiratory System Disorders Asthma: airways become narrow and swollen Common cold: virus infects the upper respiratory tract Pneumonia: infection that inflames air sacs in the lungs How can we help prevent the spread of respiratory illnesses?

19. The Power of Deep Breathing Can help you relax and reduce stress Brings more oxygen to your body May improve focus and concentration Let's try a deep breathing exercise together!

20. Respiratory System and Exercise Exercise makes your heart and lungs stronger You breathe faster during exercise to get more oxygen Regular exercise can increase lung capacity What's your favorite way to exercise?

21. Protecting Our Air Clean air is important for healthy lungs Pollution can harm our respiratory system Trees and plants help clean the air What can you do to help keep the air clean?

22. Review: Parts of the Respiratory System Nose: filters, warms, and moistens air Windpipe (Trachea): carries air to and from lungs Lungs: exchange oxygen and carbon dioxide Can you point to where these parts are on the diagram?

23. Conclusion: The Breath of Life The respiratory system is essential for life It works non-stop, even when we're sleeping Taking care of it helps us stay healthy and active What's the most interesting thing you learned about breathing?

24. The Nose: Our Air Filter The nose is the first stop for air entering your body It has tiny hairs called cilia that trap dust and germs Your nose warms and moistens the air you breathe in Can you feel the air moving through your nostrils as you breathe?

25. The Amazing Sinuses Sinuses are air-filled spaces around your nose They help make your voice sound the way it does Sinuses produce mucus to keep your nose moist Why do you think it's important to keep your nose moist?

26. The Pharynx: Where Air and Food Meet The pharynx is the back of your throat It's a passage for both air and food The epiglottis is a flap that covers your windpipe when you swallow Have you ever had food "go down the wrong way"? That's when the epiglottis doesn't close in time!

27. The Larynx: Your Voice Box The larynx is located in your neck It contains your vocal cords Air passing through makes your vocal cords vibrate, producing sound Can you make a high sound and then a low sound? Feel how your throat changes!

28. The Trachea: Air's Highway Also called the windpipe It's about as wide as a garden hose Has rings of cartilage to keep it open Why do you think it's important for the trachea to stay open all the time?

29. Bronchi: Branching Air Tubes The trachea splits into two main bronchi Each bronchus leads to a lung They continue to branch into smaller tubes called bronchioles If you could shrink down and explore your bronchi, what do you think you'd see?

30. The Lungs: Oxygen Central You have two lungs in your chest They're protected by your ribcage Your left lung is slightly smaller to make room for your heart Place your hands on your chest. Can you feel your lungs working as you breathe?

31. Alveoli: Tiny Air Sacs Alveoli are microscopic air sacs in your lungs You have millions of them! This is where oxygen enters your blood If all your alveoli were spread out, they would cover a tennis court! Can you imagine that?

32. The Diaphragm: Breathing's Helper The diaphragm is a large, dome-shaped muscle below your lungs It flattens when you breathe in, creating space for your lungs to expand When it relaxes, you breathe out Try taking a deep breath. Can you feel your diaphragm moving?

33. The Process of Breathing Inhaling: diaphragm contracts, chest expands, air rushes in Exhaling: diaphragm relaxes, chest falls, air is pushed out This happens about 12-20 times per minute! Count how many breaths you take in one minute. Is it more or less than you expected?

34. Gas Exchange: The Main Event Oxygen from the air moves into your blood through the alveoli Carbon dioxide from your blood moves into the alveoli to be exhaled This exchange happens incredibly fast! Why do you think your body needs to get rid of carbon dioxide?

35. The Respiratory System at Work When you exercise, your breathing gets faster This brings more oxygen to your working muscles Your heart also beats faster to move the oxygen-rich blood around What activities make you breathe harder?

36. Keeping Your Lungs Healthy Exercise regularly to strengthen your lungs Avoid smoking and secondhand smoke Eat a balanced diet with fruits and vegetables What are some ways you can protect your lungs from pollution?

37. The Importance of Clean Air Clean air is essential for healthy lungs Air pollution can harm your respiratory system Trees and plants help clean the air How can you help keep the air clean in your community?

38. Respiratory System Defenses Nose hairs and mucus trap dust and germs Cilia in your airways sweep out unwanted particles Coughing and sneezing help remove irritants Why do you think it's important to cover your mouth when you cough or sneeze?

39. Common Respiratory Problems Asthma: airways become narrow and swollen Common cold: virus infects the upper respiratory tract Allergies: immune system overreacts to harmless substances Have you ever had a cold? How did it affect your breathing?

40. Animals and Breathing Fish use gills to breathe underwater Birds have air sacs in addition to lungs Insects breathe through tiny holes in their body called spiracles Can you think of other animals with interesting ways of breathing?

41. The Power of Deep Breathing Deep breathing can help you relax and reduce stress It brings more oxygen to your body It may improve focus and concentration Let's try a deep breathing exercise together!

42. Protecting Our Precious Breath The respiratory system works non-stop, even when we're sleeping Taking care of it helps us stay healthy and active Remember to breathe deeply, exercise regularly, and avoid pollution What's the most interesting thing you learned about breathing today?

43. Question 1 What is the name of the large muscle below the lungs that helps us breathe? A) Bronchus B) Alveoli C) Diaphragm D) Trachea What do you think this muscle does when we breathe in?

44. Question 2 Which part of the respiratory system warms, filters, and moistens the air we breathe in? A) Lungs B) Windpipe C) Nose D) Mouth Can you feel the air moving through this part as you breathe right now?

45. Question 3 What are the tiny air sacs in the lungs called? A) Bronchi B) Alveoli C) Cilia D) Capillaries If you could see these up close, what do you think they might look like?

46. Question 4 What is the main job of the respiratory system? A) To pump blood B) To digest food C) To filter waste D) To exchange oxygen and carbon dioxide Why do you think this job is so important for our bodies?

47. Question 5 What are the tiny hair-like structures in the airways called? A) Follicles B) Cilia C) Villi D) Flagella How do you think these structures help keep our lungs clean?

48. Question 6 About how many breaths does an average person take in a day? A) 2,000 B) 10,000 C) 20,000 D) 50,000 Can you count how many breaths you take in one minute?

49. Question 7 What are the two main branches of the windpipe called? A) Bronchi B) Alveoli C) Capillaries D) Arteries If you could travel down your windpipe, what do you think you'd see when it branches?

50. Question 8 Which of these is NOT a way to keep your respiratory system healthy? A) Exercising regularly B) Avoiding smoking C) Eating lots of sugar D) Washing your hands often What's one thing you can do today to help keep your lungs healthy?

51. Question 9 What can deep breathing exercises help with? A) Improving memory B) Growing taller C) Reducing stress D) Curing the common cold Let's try taking three deep breaths together. How do you feel afterward?

52. Question 10 What gas does our body need to breathe in? A) Carbon dioxide B) Oxygen C) Nitrogen D) Hydrogen Why do you think our bodies need this gas to survive?

53. Answer Key 1. C) Diaphragm 2. C) Nose 3. B) Alveoli 4. D) To exchange oxygen and carbon dioxide 5. B) Cilia 6. C) 20,000 7. A) Bronchi 8. C) Eating lots of sugar 9. C) Reducing stress 10. B) Oxygen Great job completing the quiz! Which question did you find most interesting?