Respiratory System

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00:10 Breath in, breathing out! That’s what I say throughout!

00:14 Breath in, breathing out! That’s what I say throughout!

00:23 Oh, so you’ve been watching me work out? Eh?

00:27 Rather breathe in.. and breathe out.

00:30 Ooooh. This is tiring.

00:33 So anyway, why don’t we talk about Breathing today?

00:37 Still can’t get a hint?

00:39 Well, today we’ll talk about the Human Respiratory system!

00:44 Zoom in!

00:46 Alright, do this, right now.

00:49 I am watching you.

00:50 Just start running wherever you are

00:53 Run, run, run, run, run! Now stop!

00:59 Isn’t your breathing heavy?

01:01 Well, that’s because right now your body needs more oxygen to breathe!

01:07 And you get oxygen from the air around you.

01:11 Without oxygen, you’d be like a car without fuel..

01:15 ..a water-less pool and wouldn’t that be uncool?

01:20 One of the major reasons why you’re alive is Oxygen!

01:25 So take a deep breath in.

01:31 When you breathe in, you take in oxygen present in the air.

01:36 The air then passes through your nostrils.

01:39 There are tiny hairs present in your nostrils..

01:42 ..that obstruct all the dust particles

01:48 Then the air travels through the windpipe, also called the Trachea..

01:54 ..which filters the air inhaled.

01:57 The Trachea branches out to two tubes called Bronchi.

02:02 Where tiny hair called Cilia move back and forth moving the mucus inside.

02:08 The Mucus is a sticky substance that collects germs and other particles..

02:14 ..that might harm the lungs.

02:16 The Bronchi then carry air into each lung.

02:20 The right has three lobes whereas, the left lung has two lobes.

02:27 The left lung is slightly smaller in size to give space to the heart.

02:32 These lobes are filled with small and spongy air sacs called alveoli..

02:39 ..where the exchange of oxygen and carbon dioxide happens

02:44 It is here, the blood picks up oxygen and lets go off carbon dioxide.

02:50 Just beneath the lungs, there’s a dome-shaped muscle called Diaphragm..

02:56 ..that contracts when you breathe in and expands when you breathe out.

03:02 It also separates the chest cavity from the abdominal cavity.


03:12 The lungs are the only organs that can float on water.

03:16 A person breathes approximately 20,000 times in one day.

03:21 So friends! Didn’t you just gasp and grasp all the facts?

03:28 Tune in next time for more fun facts.

03:32 This is me zooming out!



  1. Why do we breathe heavy while we are running? (01:01)
  2. Where do we get oxygen from? (01:07)
  3. What do hairs in your nostrils do? (01:42)
  4. What is the mucus? (02:08)
  5. How many lobes do we have on the right and on the left? (02:20)
  6. Which lung is smaller and why? (02:27)
  7. How many times does a person breathe a day? (03:16)



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