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The Main Structural Components Of The Respiratory System

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Respiratory system
The main structural components of the respiratory system consists of the nasal cavity and the pharynx then lower in the body there is the larynx, trachea and the lungs when you move lower into the body there is the bronchi and the bronchioles, then at the bottom of the body there is the alveoli and the diaphragm.
Nasal Cavity- Is a hollow space in the nose and skull that has lots of mucus on the membrane. The function of the nasal cavity is to warm, moisturise and filter the air entering the body, before it reaches the lungs.
Trachea- Is normally called the windpipe. The Pharynx and larynx are also located along the trachea. The main function of the trachea is the air to and from the lungs. The Trachea is located at the base of the neck and in the body’s middle line.
Lungs- Is to process gas exchange called respiration. Oxygen from the Trachea comes in and enters the blood and a waste of gas, which is the result of metabolism. The lungs also help us get rid of carbon dioxide as we breathe it out.
Alveoli- Gas Exchange occurs here.
Main the functional unit of the lungs
Site of gaseous exchange
Very thin walled – so that gas can pass quickly into and out of the blood
Huge blood supply – Highly vascular
Massive surface area
Oxygen passes from the lungs into the blood
Carbon dioxide passes from the blood into the lungs and out to the atmosphere when you breathe out
When we inhale there is a large muscle called the diaphragm. The diaphragm flexes downward to

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