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The lower respiratory tract is also called the respiratory tree or tracheobronchial tree, to describe the branching structure of airways supplying air to the lungs, and includes the trachea, bronchi and bronchioles. [8] trachea. main bronchus (diameter approximately 1 – 1.4 cm in adults) [9] lobar bronchus (diameter approximately 1 cm)
FMA. 7158. Anatomical terminology. [edit on Wikidata] The respiratory system (also respiratory apparatus, ventilatory system) is a biological system consisting of specific organs and structures used for gas exchange in animals and plants. The anatomy and physiology that make this happen varies greatly, depending on the size of the organism, the ...
The respiratory tract has a branching structure, and is also known as the respiratory tree. [55] In the embryo this structure is developed in the process of branching morphogenesis, [56] and is generated by the repeated splitting of the tip of the branch. In the development of the lungs (as in some other organs) the epithelium forms branching ...
t. e. Respiratory epithelium, or airway epithelium, [1] is a type of ciliated columnar epithelium found lining most of the respiratory tract as respiratory mucosa, [2] where it serves to moisten and protect the airways. It is not present in the vocal cords of the larynx, or the oropharynx and laryngopharynx, where instead the epithelium is ...
Each respiratory bronchiole supplies the alveoli held in each acinus accompanied by a pulmonary artery branch. The pulmonary lobule is the portion of the lung ventilated by one bronchiole. Bronchioles are approximately 1 mm or less in diameter and their walls consist of ciliated cuboidal epithelium and a layer of smooth muscle .
The bronchi are conducting passages for air into the lungs. A bronchus (/ ˈbrɒŋkəs / BRONG-kəs; pl.: bronchi, / ˈbrɒŋkaɪ / BRONG-ky) is a passage or airway in the lower respiratory tract that conducts air into the lungs. The first or primary bronchi to branch from the trachea at the carina are the right main bronchus and the left main ...
Carina of trachea. Cartilages of larynx, trachea and bronchi. (Carina is at the point of bifurcation.) Transverse section of the trachea, just above its bifurcation, with a bird’s-eye view of the interior. (Carina not labeled; the ridge that separates the left and right bronchus.) The carina of trachea (also: " tracheal carina " [1]) is a ...
Bronchopulmonary segments visible but not labeled. A bronchopulmonary segment is a portion of lung supplied by a specific segmental bronchus and its vessels. [1][2] These arteries branch from the pulmonary and bronchial arteries, and run together through the center of the segment. Veins and lymphatic vessels drain along the edges of the segment.