What may happen if the irritant receptors in the lung are stimulated?

Asked By: Da Volmann | Last Updated: 9th April, 2020
Category: medical health lung and respiratory health
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When stimulated, these receptors constrict the airways and cause rapid shallow breathing, which inhibits the penetration of injurious agents into the bronchial tree. These receptors are supplied, like the stretch receptors, by the vagus nerve. Stimulation of irritant receptors also causes coughing.

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Also asked, what stimulates receptors in the lungs?

Lung Receptors The main effect of stimulating these receptors is a slowing of respiratory frequency by increasing expiratory time. This is known as the Hering-Breuer inflation reflex. Irritant receptors lie between airway epithelial cells and are stimulated by noxious gases, cold, and inhaled dusts.

Similarly, when J receptors are stimulated what response is triggered? The stimulation of the J-receptors causes a reflex increase in breathing rate, and is also thought to be involved in the sensation of dyspnea, the subjective sensation of difficulty breathing.

Moreover, when stretch receptors in the lungs are activated?

Pulmonary stretch receptors are mechanoreceptors found in the lungs. When the lung expands, the receptors initiate the Hering-Breuer reflex, which reduces the respiratory rate. Increased firing from the stretch receptors also increases production of pulmonary surfactant.

What do stretch receptors do?

muscle systems …has important sensory structures called stretch receptors, which monitor the state of the muscle and return the information to the central nervous system. Stretch receptors are sensitive to the velocity of the movement of the muscle and the change in length of the muscle.

36 Related Question Answers Found

What is pulmonary tract?

respiratory tract (RES-pih-ruh-TOR-ee trakt) The organs that are involved in breathing. These include the nose, throat, larynx, trachea, bronchi, and lungs. Also called respiratory system. Enlarge.

How do stretch receptors control heart rate?

Special pressure sensors called baroreceptors (or venoatrial stretch receptors) located in the right atrium of the heart detect increases in the volume and pressure of blood returned to the heart. These receptors transmit information along the vagus nerve (10th cranial nerve) to the central nervous system.

What are stretch receptors called?

Stretch receptors called Golgi tendon organs are found within the collagen fibers of tendons and within joint capsules. They are generally located in series with the muscle rather than the parallel arrangement of the intrafusal muscle fibers.

What are the functions of the respiratory system?

The respiratory system is what allows us to breathe and exchange carbon dioxide for oxygen. The human respiratory system is a series of organs responsible for taking in oxygen and expelling carbon dioxide. The primary organs of the respiratory system are the lungs, which carry out this exchange of gases as we breathe.

What triggers a cough reflex?


Laryngeal and tracheobronchial receptors respond to both mechanical and chemical stimuli. Chemical receptors sensitive to acid, heat, and capsaicin-like compounds trigger the cough reflex via activation of the type 1 vanilloid (capsaicin) receptor [3-5].

Do the lungs have pain receptors?

The lungs do not have a significant amount of pain receptors, which means that any pain felt in the lungs probably originates somewhere else in the body. However, some lung-related conditions can result in pain in the left lung. The chest contains several vital organs, including the heart and lungs.

What are rapidly adapting receptors?

Rapidly adapting receptors (RARs) occur throughout the respiratory tract from the nose to the bronchi. They have thin myelinated nerve fibres, an irregular discharge and adapt rapidly to a maintained volume stimulus, but often slowly to a chemical stimulus.

What is the most common cause of chronic obstructive pulmonary disease?

Long-term exposure to lung irritants that damage the lungs and the airways usually is the cause of COPD. In the United States, the most common irritant that causes COPD is cigarette smoke. Pipe, cigar, and other types of tobacco smoke also can cause COPD, especially if the smoke is inhaled.

What is surfactant in lungs?

Pulmonary surfactant is a mixture of lipids and proteins which is secreted by the epithelial type II cells into the alveolar space. Its main function is to reduce the surface tension at the air/liquid interface in the lung. Surfactant protein A (SP-A) appears to promote most of SP-B's functions.

What is bronchitis infection?


Bronchitis is an inflammation of the lining of your bronchial tubes, which carry air to and from your lungs. People who have bronchitis often cough up thickened mucus, which can be discolored. Bronchitis may be either acute or chronic.

What is J reflex?

In 1970 Paintal described the J reflex, the inhibition of somatic muscle by stimulation of type J receptors in the alveolar walls of cats. The evidence was indirect: in cats the reflex is known to inhibit muscle tone and the pulmonary receptors are stimulated by an increase in pulmonary capillary pressure and flow.

What is tidal volume?

Tidal volume (symbol VT or TV) is the lung volume representing the normal volume of air displaced between normal inhalation and exhalation when extra effort is not applied. In a healthy, young human adult, tidal volume is approximately 500 mL per inspiration or 7 mL/kg of body mass.

Where does gas exchange occur within the respiratory system?

Gas exchange is the delivery of oxygen from the lungs to the bloodstream, and the elimination of carbon dioxide from the bloodstream to the lungs. It occurs in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.

Which center is located in the pons?

The respiratory center is located in the medulla oblongata and pons, in the brainstem. The respiratory center is made up of three major respiratory groups of neurons, two in the medulla and one in the pons.

How does the diaphragm operate during inspiration?


When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.

Which receptors are located in the smooth muscles of airways?

In the lungs, muscarinic receptors are present on airway smooth muscle and on the nerves that control airway smooth muscle.

What type of epithelium is found in the primary bronchi?

The cartilage and mucous membrane of the primary bronchi are similar to those in the trachea. They are lined with respiratory epithelium, which is classified as ciliated pseudostratified columnar epithelium.