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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)
The respiratory tract has a branching structure, and is also known as the respiratory tree. [53] In the embryo this structure is developed in the process of branching morphogenesis, [54] 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 ...
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 environment in which it lives and its evolutionary ...
The respiratory system is the (anatomical) biological system of any organism that engages in metabolic gas exchange. Even plants have respiratory systems, taking in carbon dioxide and emitting oxygen. This category covers the structure of respiratory systems.
Pages in category "Respiratory system anatomy" The following 19 pages are in this category, out of 19 total. This list may not reflect recent changes. A.
The highest concentration of blood in the pulmonary circulation occurs in the bases of the pulmonary tree compared to the highest pressure of gas in the apexes of the lungs. Alveoli may not be ventilated in shallow breathing. Shunting may also occur in disease states: Acute respiratory distress syndrome (ARDS). Alveolar collapse, which can ...
The normal ratio of ciliated cells to secretory cells is 10 to 1, and this is highly controlled throughout most of the respiratory tree. [3] When this ratio is upset in this way, the effect is of generating the mucus hyperplasia associated with a number of respiratory diseases, due to the insufficient ciliary action needed for mucociliary ...
Enteral respiration, also referred to as cloacal respiration or intestinal respiration, [1] is a form of respiration in which gas exchange occurs across the epithelia of the enteral system, usually in the caudal cavity ().