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  2. Respiratory tract - Wikipedia

    en.wikipedia.org/wiki/Respiratory_tract

    Complete respiratory system. The respiratory tract is divided into the upper airways and lower airways.The upper airways or upper respiratory tract includes the nose and nasal passages, paranasal sinuses, the pharynx, and the portion of the larynx above the vocal folds (cords).

  3. Respiratory system - Wikipedia

    en.wikipedia.org/wiki/Respiratory_system

    In humans and other mammals, the anatomy of a typical respiratory system is the respiratory tract.The tract is divided into an upper and a lower respiratory tract.The upper tract includes the nose, nasal cavities, sinuses, pharynx and the part of the larynx above the vocal folds.

  4. Primary ciliary dyskinesia - Wikipedia

    en.wikipedia.org/wiki/Primary_ciliary_dyskinesia

    Primary ciliary dyskinesia (PCD) is a rare, autosomal recessive genetic ciliopathy, that causes defects in the action of cilia lining the upper and lower respiratory tract, sinuses, Eustachian tube, middle ear, fallopian tube, and flagella of sperm cells.

  5. Breathing - Wikipedia

    en.wikipedia.org/wiki/Breathing

    Real-time magnetic resonance imaging of the human thorax during breathing X-ray video of a female American alligator while breathing. Breathing (spiration [1] or ventilation) is the rhythmical process of moving air into and out of the lungs to facilitate gas exchange with the internal environment, mostly to flush out carbon dioxide and bring in oxygen.

  6. Continuous positive airway pressure - Wikipedia

    en.wikipedia.org/wiki/Continuous_positive_airway...

    Continuous positive airway pressure (CPAP) is a form of positive airway pressure (PAP) ventilation in which a constant level of pressure greater than atmospheric pressure is continuously applied to the upper respiratory tract of a person.

  7. AP PHOTOS: Cristiano Ronaldo turns 40: A look at the ... - AOL

    www.aol.com/ap-photos-cristiano-ronaldo-turns...

    Cristiano Ronaldo turned 40 on Wednesday and the goals are still flowing for the Portugal superstar in the twilight of his career, whether it’s for his national team or his Saudi club Al-Nassr.

  8. Jay Leno Explains Why He Only Sleeps 4 Hours a Night: 'I'm ...

    www.aol.com/lifestyle/jay-leno-explains-why-only...

    Jay Leno is sharing why he just does not sleep much.. The comedian, 74, made headlines back in December 2024 when he revealed he only sleeps about four hours each night during an appearance on ...

  9. Respiratory tract infection - Wikipedia

    en.wikipedia.org/wiki/Respiratory_tract_infection

    The upper respiratory tract is considered the airway above the glottis or vocal cords; sometimes, it is taken as the tract above the cricoid cartilage.This part of the tract includes the nose, sinuses, pharynx, and larynx.