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Bronchial tree. Together, the trachea and the two primary bronchi are referred to as the bronchial tree. At the end of the bronchial tree lie the alveolar ducts, the alveolar sacs, and the...
A bronchial tree (or respiratory tree) is the collective term used for these multiple-branched bronchi. The main function of the bronchi, like other conducting zone structures, is to provide a passageway for air to move into and out of each lung.
Your tracheobronchial tree looks like an upside-down tree with the trachea as the trunk and the bronchi representing the branches. The tubes of the right and left main bronchi divide into smaller segments as they move deeper into your lungs.
The respiratory portion includes the respiratory bronchiole, alveolar ducts, alveolar sacs, and alveoli. As the volume of the lung changes with the thoracic cavity during ventilation (respiration), the entire bronchial tree will move within the lung.
The trachea, bronchi and bronchioles form the tracheobronchial tree – a system of airways that allow passage of air into the lungs, where gas exchange occurs. These airways are located in the neck and thorax.
Trachea. The bronchus is a major airway in the respiratory system that carries air from the trachea into the lungs. It is a part of the bronchial tree, which further branches into smaller airways called bronchioles. The bronchi are tubular structures reinforced with cartilage rings, ensuring they remain open for air to pass through.
The bronchi branch off into progressively smaller structures that make up the bronchial tree. It divides to the right and left, then subdivides further into bronchioles. It ends at the alveoli, tiny sacs in the lungs that exchange oxygen for carbon dioxide.
The root of the lungs is made of structures like the main bronchus arteries, and veins. The lungs are light, soft and spongy, and each of them has an apex a base, 3 surfaces: costal , mediastinal and diaphragmatic, and 3 borders: anterior, inferior and posterior.
The bronchial tree is a part of the lower respiratory tract that begins at the level of tracheal bifurcation and ends with small bronchioles that pass into the alveolar sacs.
Bronchi and Bronchial Tree. In the mediastinum, at the level of the fifth thoracic vertebra, the trachea divides into the right and left primary bronchi. The bronchi branch into smaller and smaller passageways until they terminate in tiny air sacs called alveoli.