Primary tubercle, Biology

Assignment Help:

Primary  Tubercle  (Ghon Tubercle):

When  an  individual with  no  previous exposure  to  tuberclosis inhale a sufficient number of  tubercle bacilli into the alveoli, tuberculosis infection occurs. Inflammation occurs within the parenchyma of  the  lungs. Body  counteracts  the infection with  the natural  body defenses. Lymph  nodes in  the  hilar region  of the  lung become  enlarged as  they  filter drainage  form  the  infected site. The inflammatroy process and cellular reaction produce a small, firm white  nodule called  the  primary tubercle.

Calcifid Nodule  or Chon Tubercle:

The center of the primary tubercles contains tubercle bacilli. Cells gather around the center, and usually the outer portion becomes fibrosed. As blood vessels get compressed interfering with nutrition of  the tubercle, necrosis occurs at the center.


The area becomes walled off by fibrotic tissue around the outside, and the center gradually becomes soft and cheesy in consistency. This process is known as caseation necrosis. This material may become calcified (Ghon tubercle). Most people who are exposed  to tuberculosis and develop infection do not have active tuberculosis. X-ray shows the calcified nodule. The hilar lymph nodes and a Ghon tubercle seen is X-ray is referred as the primary complex. Person who have primary complex will show positive result inobatin  test. However a nurse needs to explain to the clients that a positive tuberculin test does not mean that helshe has tuberculosis. Body's reaction to  the organism. A person who has been unless with tubercle bacilli harbours the organism for the remainder of he person's  life unless he or she has received prophylactic isonizid. When a person is under physical or emotional stress, the bacilli lying dormant in the lungs become active. 


Related Discussions:- Primary tubercle

Heart failure, It is a clinical syndrome wherein heart fails to pump blood ...

It is a clinical syndrome wherein heart fails to pump blood at a rate required by the tissues of the body or it can do so only with an elevated filling pressure. This may be due to

Define the structure of d and l isomerism, Define the Structure of D and L ...

Define the Structure of D and L isomerism? The prefix D or L are used to refer to the configuration of the carbon next to the primary alcoholic group or in other words, the con

Ageing, AGEING - The appearance of some changes as the body grows older...

AGEING - The appearance of some changes as the body grows older is called ageing. It ultinately leads to death. It can be defined as deteoration in structure and function of

Which kind of animals does the placenta exist, Q. In which kind of animals ...

Q. In which kind of animals does the placenta exist? What is its major function? True placenta is present in placental mammals. The placenta is formed from the chorion of th

Explain about mental foramen and nerve, Explain about Mental foramen and ne...

Explain about Mental foramen and nerve Mental foramen is a strategically important landmark during osteotomy procedures. Its location and the possibility that an anterior loop

Define about the composition of body weight, Define about the Composition o...

Define about the Composition of Body Weight? You might have read in previous units that our body weight is composed of muscle bone and fat. Segregating these components of body

Determine the treatment modalities of cis therapy, The protocol includes fo...

The protocol includes four treatment modalities: A = Mechanical Debridement In this the patients are re-instructed in oral hygiene and motivated to initiate and continue m

Is hemoglobin and myoglobin are heterotetramers, Which of the following sta...

Which of the following statements about hemoglobin and myoglobin structure are true? Select the five true statements. 1. By itself, heme is not a good oxygen carrier. It must be

Explain the vertical implant position, Vertical Implant Position: The i...

Vertical Implant Position: The implant can be submerged in the bone up till the level, where it is surface treated or further embedded till its shoulder, depending upon the sit

Regulation of the citric acid cycle, Regulation of the Citric Acid Cycle ...

Regulation of the Citric Acid Cycle The citric acid cycle is regulated by certain enzymes and by the availability of ADP.

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