9/20/2023 0 Comments Dead space in lungs definition![]() The first branches without cartilage are called terminal bronchioles. Walls of trachea and bronchi contain cartilage for support. Each of them enters each lung and makes further branching. This consists of the tracheal tube, which branches into two bronchi. The conducting zone where there is no gas exchange.Airways beyond the larynx are divided into 2 zones: A respiratory cycle consists of an inspiration (inhalation) movement of air from the external environment into alveoli, and expiration (exhalation) – the movement of air from alveoli to the external environment.ĭuring inspiration, air passes through nose/mouth, pharynx (throat), and larynx. ![]() Airways are tubes through which air flows between the external environment and alveoli. Transport of H+ Ions Between Tissues and LungsĮach lung is composed of air sacs called alveoli – the sites of gas exchange with the blood.
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