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

In addition, vitamin A can help keep the lining of the respiratory system, gastrointestinal system, and urinary system strong and functioning properly.3 Side Effects and Safety Considerations Retinyl palmitate is less potent than prescription-strength retinol. —William Truswell, Verywell Health, 30 Oct. 2024

Participants performed treadmill tests to assess what’s known as cardiorespiratory fitness, or how easily the circulatory and respiratory systems can supply oxygen to muscles during physical exertion. —Lisa Rapaport, EverydayHealth.com, 16 Oct. 2024

However, indoor mold can irritate your respiratory system. —Sarah Hudgens, Health, 4 Oct. 2024

These items will keep mold spores from getting on your hands or into your respiratory system or eyes. —Rabekah Henderson, Southern Living, 27 Sep. 2024

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