[Applause] [Laughter] Hello friends we all know that in order to live we have to breathe and to carry out this very important function we use the respiratory system [Music] breathing is an involuntary process that we do without realizing but we can control it today we're going to find out what breathing consists of and how the respiratory system works the first thing we need to know is that breathing consists of inhaling air in nature to take advantage of the oxygen it contains and thereby expelling the carbon dioxide which is the part of the air we don't
[Music] use the first phase which is when the air enters the lungs is called inhalation the second phase which is when we expel the air we don't use is called exhalation they are the exact [Music] opposite there respiratory system is responsible for breathing and for that it uses the lungs and the Airways which are the parts that compose it the Airways are tubes through which the air passes until it reaches the lungs and they are made up of the nose and mouth the FNX the larynx the traa the broni the bronchial and the alvioli now
let's take a look at how the respiratory system works when we breathe in air enters our body through our nose and mouth the air then passes through the far and into the larynx did you know that the larynx contains the vocal cords which allow us to speak or sing la la la la la they are like the strings of a [Music] guitar when they vibrate they produce the voice well once the air has passed through the larynx it reaches the traa the traa is divided into two tubes through which the air passes which are called
the broni the broni once inside the lungs Branch into narrower tubes called bronchials and each Broncho leads into many small sacks called alvioli and it is there in the alvioli where gas exchange takes place the oxygen in the air passes into the blood through some very small blood vessels which are called alvioli then what is left over from the air which is carbon dioxide travels back through the respiratory system to be expelled outside [Music] as you can see the respiratory system is very important so we have to take good care of it and for that
we have to practice a lot of sport and take care of nature so as not to pollute the air we breathe healthy lungs are pink but when we breathe in tobacco smoke SM or when the air is very polluted they turn brown and stop working properly when this happens we get tired without doing anything and we start to feel really bad it's certainly not very smart to damage our lungs don't you think so make sure you do lots of physical exercise and remember never ever smoke to ensure that your lungs will always be very healthy
and that you will always be very happy goodbye friends see you in the next video search us and subscribe to happy learning YouTube channel
