The alveoli are the passages via which oxygen and carbon dioxide are exchanged between the lungs and the blood during the process of inhalation and exhalation. The oxygen that is taken in through the air is transported through the alveoli and into the bloodstream, where it is distributed throughout the body’s tissues.

The trachea is the long tube connecting the larynx to the bronchi. The trachea is a vital component of the respiratory system. The trachea is composed of cartilage rings. It is lined with mucus-producing cells.

The larynx is a hollow tube that connects the pharynx (throat) to the rest of the respiratory system. It aids in safe swallowing and contains the vocal cords, which is why it is frequently referred to as the voice box.

Reference:

Cleveland Clinic. (n.d.). Larynx (Voice Box): Anatomy & Function. Cleveland Clinic; my.clevelandclinic.org. Retrieved from https://my.clevelandclinic.org/health/body/21872-larynx#:~:text=Your%20larynx%20is%20a%20hollow,strategies%20and%20specialists%20can%20help.

Cleveland Clinic. (n.d.). Trachea (Windpipe): Function and Anatomy. Cleveland Clinic; my.clevelandclinic.org. Retrieved from https://my.clevelandclinic.org/health/body/21828-trachea#:~:text=The%20trachea%20is%20the%20long,with%20cells%20that%20produce%20mucus.

NCI (n.d.). Alveoli. National Cancer Institute; http://www.cancer.gov. Retrieved from https://www.cancer.gov/publications/dictionaries/cancer-terms/def/alveoli