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

Explain in brief about the diseases sleep paralysis, Explain in brief about...

Explain in brief about the diseases Sleep paralysis This is an episode of paralysis in the transition between wakefulness and sleep. The period of paralysis is usually brief bu

Distinguish between epithelial and connective tissues, Distinguish between ...

Distinguish between epithelial and connective tissues with respect to their cell arrangement? PROVIDE a specific example (for both tissue types) of how the arrangement of cells hel

Function of adenosine in consciousness, Q. Function of Adenosine in conscio...

Q. Function of Adenosine in consciousness? The adenosine plays a major role in inducing sleep. Injections of adenosine promote sleep and decrease wakefulness. Conversely, adeno

Wet and dry thermal treatment, Wet and dry thermal treatment Wet therma...

Wet and dry thermal treatment Wet thermal treatment: it is based on exposure of shredded infectious waste to high temperature, high pressure steam. It is inappropriate for the

Define triple sugar iron - carbohydrate utilization pattern, Define Triple ...

Define Triple Sugar iron - Carbohydrate Utilization Pattern? Triple sugar iron (TSI) agar is used to observe carbohydrate utilization pattern. The medium contains 1% concentr

#title.examples of classes of vertebrates, how to explain an example from e...

how to explain an example from each class of vertebrate

Endosperm with chalazal haustorium, Endosperm with Chalazal Haustorium ...

Endosperm with Chalazal Haustorium In Grevillea robusta, a member of Proteaceae the endosperm is of the free nuclear type. The upper part of endosperm becomes cellular, where

Multiple membrane-spanning proteins, Various integral proteins have multipl...

Various integral proteins have multiple membrane-spanning   -helices. Bacteriorhodopsin, a protein found in a photosynthetic bacterium captures the energy from light and uses it to

Allele that causes albinism is recessive to the allele, The allele that ca...

The allele that causes albinism (p) is recessive to the allele for normal pigmentation (P). A normal woman whose father is an albino marries an albino man whose parents are both no

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