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Hello students.
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Respiratory system is responsible for the exchange of gases, mainly oxygen and carbon dioxide between the body and the external environment.
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It consists of several interconnected structures including trachea, bronchi, bronchioles and alveoli.
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Trachea.
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The trachea is a rigid tube that extends from the larynx down to the bronchi.
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It is composed of cartilaginous rings that help keep it open and prevent collapse during breathing.
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The trachea serves as the main airway that connects the upper respiratory system to the lower respiratory system.
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Next is primary bronchi.
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The trachea divides into two main branches known as the primary bronchi with each bronchus leading to each lung.
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These bronchi serve as the initial conducts for air to enter the lung.
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Next is secondary bronchi.
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Once inside the lung, each primary bronchus divides further into smaller branches known as secondary bronchi...