Sneezing (Q46972): Difference between revisions
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Espirrar é um dos reflexos mais fundamentais da via aérea, caracterizado por uma inspiração profunda preparatória seguida de um aumento abrupto na pressão subglótica, refletindo uma expiração ativa forçada semelhante à tosse. Estímulos químicos ou físicos à mucosa nasal podem iniciar reflexos respiratórios e cardiovasculares potentes pela estimulação de nervos trigeminais. Estímulos leves resultam em espirros e hipersecreção nasal. Essas respostas reflexas protegem as vias aéreas inferiores da inalação de irritantes físicos e químicos. | |||
| description / en | description / en | ||
Sneezing is one of the most fundamental airway reflexes, which is characterised by a deep preparatory inspiration followed by an abrupt increase in subglottic pressure reflecting a forceful, active expiration rather similar to coughing. Chemical or physical stimuli to the nasal mucosa may initiate potent respiratory and cardiovascular reflexes via stimulation of trigeminal nerves. Mild stimuli result in sneezing and nasal hypersecretion. These reflex responses protect the lower airways from inhalation of physical and chemical irritants. | |||
Revision as of 15:53, 13 August 2026
Sneezing is one of the most fundamental airway reflexes, which is characterised by a deep preparatory inspiration followed by an abrupt increase in subglottic pressure reflecting a forceful, active expiration rather similar to coughing. Chemical or physical stimuli to the nasal mucosa may initiate potent respiratory and cardiovascular reflexes via stimulation of trigeminal nerves. Mild stimuli result in sneezing and nasal hypersecretion. These reflex responses protect the lower airways from inhalation of physical and chemical irritants.
| Language | Label | Description | Also known as |
|---|---|---|---|
| default for all languages | MD11.A |
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| English | Sneezing |
Sneezing is one of the most fundamental airway reflexes, which is characterised by a deep preparatory inspiration followed by an abrupt increase in subglottic pressure reflecting a forceful, active expiration rather similar to coughing. Chemical or physical stimuli to the nasal mucosa may initiate potent respiratory and cardiovascular reflexes via stimulation of trigeminal nerves. Mild stimuli result in sneezing and nasal hypersecretion. These reflex responses protect the lower airways from inhalation of physical and chemical irritants. |
