LUNG STRETCH RECEPTORS Meaning and
Definition
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Lung stretch receptors are specialized sensory nerve endings found within the walls of the lungs. These receptors, also known as pulmonary stretch receptors, play a vital role in regulating the process of respiration and ensuring the proper functioning of the respiratory system.
The lung stretch receptors are sensitive to changes in lung volume and pressure. When the lungs inflate with air during inhalation, these receptors stretch, leading to the activation of nerve impulses that are sent to the brain. This information is then processed, allowing the brain to monitor and regulate the rate and depth of breathing.
The activation of lung stretch receptors serves as a protective mechanism to prevent overinflation of the lungs. Upon reaching a certain threshold, these receptors signal the brain to initiate the process of exhalation, causing the air to be expelled from the lungs.
In addition to regulating breathing, lung stretch receptors also assist in coordinating respiratory reflexes, such as the cough reflex and the Hering-Breuer reflex. These reflexes are triggered by the stimulation of the stretch receptors, helping to regulate the respiratory rhythm and protect the respiratory system from potential damage.
Overall, the function of lung stretch receptors is crucial for maintaining proper respiratory function and ensuring that the exchange of oxygen and carbon dioxide within the lungs occurs efficiently.
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