By: molly glave
The respiratory system could possibly be the most important system in the body, for most animals, including humans, need to breathe to stay alive, and the lungs (the breathing organism) are a part of the respiratory system. Other parts of the respiratory system are: the larynx, the trachea, the alveoli as well as the bronchiole. As you can see in the picture below, there are a few more parts that you can read about in this tackk poster!
Nasal Cavity, Trachea and Pharynx
It’s better to breathe through your nose than through your mouth. For one reason, the hairs of the nasal cavity (your nostrils) work as an air cleaning system to catch bacteria, dust, and pollen. As well, the nasal cavity warms the air that you breathe. By contrast, air inhaled through the mouth cools, dries and irritates the airways, causing coughing, worsening of asthma and hayfever, and is bad for oral health.
After passing through the nose, the air you breathe goes through the trachea to get to the lungs. The trachea is also known as the windpipe. It’s the passage that leads from the pharynx, which collects the air from your nasal cavity. The trachea divides into two main tubes (bronchi), one for each lung.
The bronchial tubes send mucous into the throat to filter the air. The mucous catches and holds most of the dust, germs and other unwanted matter. It can be coughed up or swallowed after it does its work.
The left lung is smaller than the right lung to make room for the heart. The lungs are divided into sections called lobes. The right lung has three lobes and the left lung has two lobes. Before air can enter the lungs, the lungs need to expand. This is where the diaphragm comes in.
Watch this lung dissection:
The diaphragm rests just under the lungs. It is the main muscle used for breathing and it is possibly the most important part of the respiratory system. When the diaphragm contracts (gets tighter) it pushes some of the organs in your tummy down so that there is more space in your chest. Both the diaphragm and the ribs make way for the lungs to expand so that they can get as much air as the heart needs.
After passing through the bronchial tubes, the air finally reaches the air sacs, called alveoli. Two things happen at once now. The oxygen rich blood passes through the air sacs to the surrounding blood vessels that carry oxygen to the heart. The carbon dioxide is passed from the blood vessels back to the alveoli, which is exhaled when we breathe out.
check out this cool pic of alveoli:
Asthma is a fairly common disease infected in the airway. Symptoms can be coughing, wheezing, or shortness of breath. Most people with asthma use an inhaler, an inhaler is a small medical device used to puff the medication into one's lungs.
Asthma is caused by complex and not completely understood environmental interactions. Asthma's development have been associated with with environmental factors such as air pollen and allergies to all sorts of things. Women smoking during pregnancy increases chances of the child having Asthma.
So far there is no cure for Asthma expect slowing it with an inhaler.
Respiratory System end note
I hope you learned something about the Respiratory System and that you always remember to breath through your nose! Happy Breathing
So many things happen in just one breath!