How does the body defend itself from microorganisms, Biology

Assignment Help:

Q. How does the body defend itself from microorganisms and other harmful substances that enter the airway during the breathing process?

The epithelium of the airway is a ciliated epithelium and has mucus-secreting specialized cells, the secreted mucus covers the internal wall of the airway retaining organisms and foreign particles that then are swept by the cilia of the epithelium.

In the mucous ciliated epithelium of the airway there is also intense activity of the immune system with leukocytes and antibodies destroying and inactivating foreign agents.

Other defense mechanisms of the airway are the cough and the sneeze. They help the elimination of semifluid and solid particles like pathologic residuals (sputum) and accidentally aspired objects.


Related Discussions:- How does the body defend itself from microorganisms

Measuring biodiversity, Diversity is defined as the no of species present i...

Diversity is defined as the no of species present in a community termed as "species richness". We can represent species biodiversity at different geographical scales as alpha, beta

How do mineral salts participate in osmotic regulation, How do mineral salt...

How do mineral salts participate in osmotic regulation? Osmotic pressure depends on the number of particles dissolved in a solution and not on the nature of such particles. Min

Digestive system, describe the effects of the failure of the pancreas to pr...

describe the effects of the failure of the pancreas to produce sufficient insulin

State the effects of smoking for diabetics patient, State the Effects of al...

State the Effects of alcohol and smoking for diabetics patient A major concern with alcohol consumption is the potential danger of hypoglycaemia (low blood sugar), especially w

Meiosis, Why is it necessary to have the second division in meiosis even th...

Why is it necessary to have the second division in meiosis even though cells have already been reduced to haploid number after the first division?

Kin and group selection, Before we proceed to discuss kin selection we shou...

Before we proceed to discuss kin selection we should define the term altruism. It refers to the behaviour pattern of an individual in the population for the benefit of other member

Decay and nutrient cycling, Decay and Nutrient Cycling Soil organisms a...

Decay and Nutrient Cycling Soil organisms are the chief agents of decay of organic matter. Decomposition and mineralisation of organic matter results in release of inorganic nu

Define important points while working with autoclave, Define Important Poin...

Define Important Points While Working With Autoclave? Note: Following points should be kept in mind while working with autoclave. 1. Autoclave should not be packed tightly o

Embryology, what is the fertilization?

what is the fertilization?

Define solvent chemical potentials from phase equilibria, Define Solvent Ch...

Define Solvent Chemical Potentials from Phase Equilibria? Previously explained how we can evaluate the activity coefficient γ m,B of a nonelectrolyte solute of a binary soluti

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd