Bronchial Constriction
Bronchial Constriction - Related Videos
14:39
Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma
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Cited by 4 •
2010
Bronchial thermoplasty is a non-drug procedure for severe persistent asthma that delivers thermal energy to the airway wall in a precisely controlled manner to reduce excessive airway smooth muscle. Reducing airway smooth muscle decreases the ability of the airways to constrict, thereby reducing the frequency of asthma attacks.
08:25
Transverse Aortic Constriction in Mice
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Cited by 262 •
2010
Transverse aortic constriction (TAC) in the mouse is a commonly used experimental model to study mechanisms underlying cardiac hypertrophy and heart failure development. Here, we describe procedures to constrict the aorta to create a reproducible degree of cardiac hypertrophy in mice.
14:32
Primary Human Bronchial Epithelial Cells Grown from Explants
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Cited by 19 •
2010
Here we describe a detailed method for growing primary human bronchial epithelial cells from explants of human bronchial airway tissue including differentiated growth on an air-liquid interface. This method provides an abundant source of primary cells for investigating the role of the airway epithelium in human lung health and disease.
07:40
Minimally Invasive Transverse Aortic Constriction in Mice
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Cited by 42 •
2017
Minimally invasive transverse aortic constriction (MTAC) conserves the essentials of regular transverse aortic constriction (TAC) while eliminating the use of a ventilator with tracheal intubation. It proves to be a highly desirable method for high-throughput studies on left ventricular overload, particularly in translational studies.
01:23
The Bronchial Tree
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2025
The human bronchi and bronchial tree play a crucial role in the respiratory system, facilitating the exchange of oxygen and carbon dioxide. Let's delve into the intricate structure and functions of these respiratory components. The trachea, commonly known as the windpipe, is a tube that connects the larynx (voice box) to the bronchi. At a point called the carina, it bifurcates into two primary bronchi. The right primary bronchus is wider, shorter, and more vertical than the left primary...
FAQs
Parasympathetic nerve signals can promote bronchial constriction by directing airway smooth muscle to contract. This neural control is one route through which the diameter of the bronchi changes during breathing. Its importance lies in linking nervous-system activity with airflow: stronger contraction leaves a narrower passage, so air encounters greater resistance as it moves through the lungs.
Allergens, irritants, and inflammation can contribute to airway narrowing through different biological triggers. The overview identifies each as a factor associated with smooth-muscle contraction or reduced airway caliber. Considering these influences helps explain why respiratory disease can produce variable airflow limitation and why environmental or inflammatory conditions matter when studying airway obstruction.
A smaller bronchial diameter leaves less space for air to pass through, increasing resistance during breathing. Consequently, even a change in airway caliber can have an important effect on airflow through the lungs. This relationship helps connect smooth-muscle contraction at the airway level with functional effects such as wheezing, shortness of breath, and limited ventilation.
Lung-function testing helps evaluate how airway narrowing affects airflow during breathing. In the context of bronchial constriction, such testing can support assessment of the functional consequence of reduced airway caliber rather than relying only on symptoms. This makes it useful for investigating airway obstruction in respiratory disease and for examining how airway function changes with treatment.
Bronchodilators counter bronchial constriction by relaxing airway smooth muscle. Relaxation can restore some of the airway caliber lost during contraction, allowing airflow to improve. This mechanism makes bronchodilators relevant to conditions involving airway obstruction, including asthma, and provides a treatment-based way to address the physiological effect of narrowed bronchi.
Bronchial constriction is important in asthma because it provides a biological explanation for airway obstruction and related breathing symptoms. Studying the process connects cellular behavior, such as smooth-muscle contraction, with whole-organism outcomes, including wheezing or shortness of breath. It also gives biology research a framework for relating triggers, lung-function findings, and therapeutic responses.