respiratory system

noun

: a system of organs functioning in respiration and in humans consisting especially of the nose, nasal passages, pharynx, larynx, trachea, bronchi, and lungs : respiratory tract

Illustration of respiratory system

• 1 nostril
• 2 nose
• 3 nasal cavity
• 4 nasopharynx
• 5 oropharynx
• 6 larynx
• 7 trachea
• 8 bronchus
• 9 lung

Examples of respiratory system in a Sentence

Recent Examples on the Web

Both are abrasive particles with sharp edges that can irritate eyes, respiratory systems and skin. —John Yoo and John Shu, Newsweek, 23 Jan. 2025

Dust particles in the air can make asthma worse and cause allergic reactions for those who already suffer from weak respiratory systems. —Ashlyn Needham, Southern Living, 19 Jan. 2025

Ensure Good Ventilation and Wear a Mask Ammonia produces strong fumes that can irritate the mouth, throat, and respiratory system. —Jolie Kerr, Better Homes & Gardens, 27 Jan. 2025

The combination forms a toxic gas that can damage the respiratory system. —Mary Marlowe Leverette, Southern Living, 21 Jan. 2025

Word History

First Known Use

1811, in the meaning defined above

Kids Definition

respiratory system

noun

: a system of organs used in breathing that in human beings consists of the nose, nasal passages, pharynx, larynx, trachea, bronchi and lungs

Medical Definition

respiratory system

noun

: a system of organs functioning in respiration and in humans consisting especially of the nose, nasal passages, pharynx, larynx, trachea, bronchi, and lungs : respiratory tract