How You Breathe 👃 - Animated Story

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did you know just by sitting at your
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computer
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you take 12 to 15 breaths per minute
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this thanks to the world's most powerful
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sponges keeping you alive
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i'm talking about your lungs at room
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temperature you inhale about 25
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sextillion molecules with just one
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breath
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as 25 followed by 21 zeros
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let's see what it's like i'll shrink
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myself into mikey the molecule and take
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you on a journey
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inside my friend here okay
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remind me not to do that again right
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after lunch here we are
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now you can see the dust particles and
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germs floating around
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are you ready to go into the lungs i can
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enter through the nose or the mouth
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let's take the more complicated path
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we'll go through the nostrils
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whoa a field of hair the follicles
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inside your nose are as close to each
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other as the ones on your head
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the nose hairs act as security guards
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they stop
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dust dirt germs and other particles from
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getting
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into the lungs see that shiny stuff on
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the edges of the hairs
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it's a thin coating of mucus
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yep its job is to keep the lining of the
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nose moist
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and trap debris that builds up on the
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hairs it's kind of like a nursery for
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boogers
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further inside the nose you have even
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tinier hairs
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those are called the cilia and you can
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only see them with a microscope
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their job is to move mucus and other
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small particles out of the airway
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ah finally some room this is the naval
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academy
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no wait that's nasal cavity its job is
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to moisturize
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warm and filter the air before it
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reaches the lungs
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in here you also have three things
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called turbinate on each side
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they look like hot dogs and they too
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warm up and humidify the air you breathe
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and filter particles i'll squeeze
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through these and go
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further this downward slide is the
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throat
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or pharynx let's move down to the
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larynx now you see that other slide
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heading in the other direction
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that's where your food goes at the top
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of the larynx
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you have a flap shaped like a leaf
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that's the epiglottis
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it shuts every time you swallow to
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prevent food from getting into your
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lawns
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can you see that triangle-shaped opening
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those are your vocal cords
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they vibrate every time you speak and
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allow different strength and amounts of
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air to pass through
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now we're heading through the windpipe
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it's as long as two
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golf tees placed on top of each other
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but as narrow as the diameter of a
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quarter
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those bumpy rings that look like tunnels
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are made of cartilage
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it's a strong flexible tissue that
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supports the windpipe
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anyway when you breathe the windpipe
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lengthens
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and widens like a balloon when you
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exhale it goes back to its regular size
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the windpipe now divides into two
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smaller tubes
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the bronchi one bronchus goes right
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and the other goes left oh look the
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lungs
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let's see what they look like on the
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outside they have a pinkish color
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and they're made of soft elastic and
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spongy tissue
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each of your lungs is inside a sack of
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tissue and it's attached to it by a thin
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layer of liquid kind of like runny glue
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the sac creates a smooth surface to
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allow your lungs to expand
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every time you breathe your lungs have a
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different size and shape too
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the right lung is shorter than the left
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because it needs to make room for your
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liver
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but it's also broader than your left
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lung
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on the right you have three lobes the
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upper middle and lower ones
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on your left you have only the upper and
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lower ones
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there's a notch in your left lung that's
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where your heart peeks through
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hello there shy huh
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right below your lungs there's a giant
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muscle the diaphragm
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it acts as a resting spot for your lungs
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and heart
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around your lungs you have ribs those
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act as protectors
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the enclosed room your lungs live in is
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called the thorax
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now let's head inside to see what's
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going on
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the spot where the bronchus begins to
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enter the lung is called the helium
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and once they get in they divide even
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further into the lobes
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it's like being inside a tree trunk that
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divides into millions of smaller
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branches
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oh wait a sec what's happening here the
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diaphragm is expanding
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are we getting kicked out oh we're safe
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now let's take a closer look at the tiny
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branches
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hold me closer tiny branches
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okay this is where we're going they get
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so tiny
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that we can call them bronchioles
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they're smaller than a grain of sand
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and at the tips of these branches we got
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a collection of balloons
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their official name is the alveolar sax
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not to be confused with the alto sax
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at the tips of those sacks the
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individual balloons are called the
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alveoli
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that's where the gas exchange happens
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let's go inside to see what's going on
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the chamber has a membrane on the
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outside some
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epithelial cells and on the inside it
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has some liquid
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now up until this point i have been
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floating in the air
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but now i'm getting my feet wet the
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balloon chambers are surrounded by tiny
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blood vessels called the capillaries
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they have very thin walls to allow
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oxygen molecules to squeeze through
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do you see those tiny blue spots
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floating in and out of the capillaries
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that is carbon dioxide it travels freely
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back to the lungs the same way we came
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in
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oh by the way you'll recall that the
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capillaries and montagues
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didn't get along very well in romeo and
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juliet true
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now that we've passed some tissue cells
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protein and finally plasma
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we need to find transportation inside
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the capillary blood vessel
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there's a huge bus it's called a red
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blood cell
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and it's packed with iron almost 70
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percent of the iron in your body
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is in the red blood cells it also has
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270 million compartments
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those are called the hemoglobin protein
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molecules and each of them
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has four seats for four oxygen molecules
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once everybody gets on board we're going
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for the biggest ride
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ever now we're traveling through the
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cardiovascular network
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a ginormous collection of blood vessels
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that reach every cell in the body
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if we were to stretch all the blood
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vessels end to end into a straight line
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they could circle the earth more than
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two times
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do you hear that powerful pumping noise
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that's your heart
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it's the engine that pushes the oxygen
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throughout the body
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and where it needs to go but you don't
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get all the oxygen you need from your
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lungs
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the upper layer of your skin cells and
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the cells in the front surface of your
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eyes
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get most of the oxygen from the air
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[Music]
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now we're traveling to the heart and
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then the largest artery in the body
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it's called the aorta and it's sorta
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like a giant root that expands
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throughout the body to generate
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smaller roots then the oxygen goes to
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the smallest arteries
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and it travels to the muscles that's
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where we get off
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the bus allows us to detach from the
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seats and head over to the muscle cells
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and what do we do from now on well
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that's another video bye-bye