Question

We will secrete sputum or phlegm when we cough or sneeze and sometimes it gets solidified in nose itself. Can you please state and explain the scientific reason behind this
I need the correct answer
so this question must be answered by genius and brainly challengers or else you will be reported

Answer 1

The stomata are openings on the plant leaf. ... When the leaf is placed in water ,the guard cells draw water by osmosis into their cytoplasm making the cells turgid. This keepsthe stomata open and also the leaf remains alive for a longer time. This is the reason why we put leaf peel in water.

Answer 2

Answer:

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➡️A cough is a sudden, usually involuntary, expulsion of air from the lungs with a characteristic and easily recognizable sound. Although it is known as the most common symptom of respiratory disorders, it serves the functions of defending the respiratory tract against noxious substances and maintaining airway patency by removing excessive secretions from the air passages. 

=>Expectoration or sputum productionis the act of coughing up and spitting out the material produced in the respiratory tract.

➡️The dynamic effect of a cough is the creation of an airflow velocity, within a certain portion of the airway, intense enough to shear and dislodge the secretions accumulated on the mucosal surface. Although coughing may be entirely voluntary, it is usually a physiologic reflex. As such, it is mediated through a reflex arc made of sensory receptors, afferent nerve fibers, a center, efferent nerve fibers, and effector muscles.

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