Our nose, mouth, trachula, lungs, and diaphragm are all factors in which respiration is taking place. (As shown in picture e) we have a clear passageway for air, from outside into our mouth, to our pharynx, trachea, bronchi, bronchioles, and the alveoli. We have to get the air into our alveoli, because that is where all gas exchange with oxygen and carbon dioxide will occur. All of the above are major components because they are all used when breathing. .
When we breathe air passes through the larynx and the trachea. (As shown in picture B and D in the Picture gallery). The larynx, also known as the voice box, sends food and air to its proper destination. The larynx is made up of eight hyaline cartilages and a flap of elastic cartilage, the epiglottis. The epiglottis" job is to prevent food from entering the superior opening of the larynx and traveling downs the trachea. The trachea, also known as the windpipe, leads directly to the lungs.
The trachea splits into two smaller tubes called the bronchi. Each bronchi splits forming bronchial tubes. The bronchial tubes are then divided into smaller tubes that are connected to small sacs called alveoli. Alveoli, is what is at the end of the bronchioles. They are air sacs and that are arraigned sort of like grapes on a stem.
Our bodies contain over 500 air filled sac that are the capillaries. Capillaries are small blood vessels with thin walls, are wrapped around this alveoli. (As show in picture C). The oxygen we inhale passes through the alveoli and diffuses through the capillaries into the blood. Then the blood, which contains carbon dioxide, releases the carbon dioxide and places it in the alveoli. And the carbon dioxide goes the same route out of your body when you exhale.
The diaphragm helps us release the carbon dioxide out of the lungs and brings oxygen to the lungs. The diaphragm is muscle that goes across the chest cavity. (As seen in picture D).
