The Respiratory System

The respiratory system consists of ten main parts:

• nasal cavity
• pharynx
• larynx
• trachea
• carina

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• bronchi
• lungs
• bronchioles
• alveoli
• diaphragm

The Nasal Cavity

• Filters and warms the air as it enters the respiratory system

The Pharynx

• Air travels through the pharynx to the larynx

The Larynx

• Continues to transport air and houses the vocal cords

The Trachea

• Ringed cartilage that contains mucus to further filter the air

The Carina

• Where the trachea branches into the right and left bronchi

The Bronchi

• The left and right bronchi carry air to the lungs

The Lungs

• A pair of large spongy organs that holds the bronchioles and alveoli

The Bronchioles

• Transport air to the alveoli

The Alveoli

• Gas exchange occurs in the capillary bed of the alveoli

The Diaphragm

• Principle muscle of the respiratory system that contracts to pull air into the lungs and relaxes to push air out of the lungs

The Respiratory System