Portal hypertension, Biology

Assignment Help:

Portal Hypertension:

If you review the portal circulation you may recall that normal blood flow to and from the liver depends on proper functioning of  the portal vein, the hepatic artery and the hepatic veins. Disease process that damage or alter the blood flow through the liver or its major vessels are responsible for development of portal hypertension. Normal portal pressure is 5 to 10 mm/Hg and portal hypertension exists when this pressure rises. Let us define portal hypertension. 

Definition 

When the pressure in the uortai system increases or rise above 10 mm/Hg due to obstruction of  any major portion of  portal and hepatic venous bed and collaterals form as a result of  poor blood flow through major venous channels. The spleen and other organs that empty into portal system also begin to undergo the effects of congestion. 

The portal hypertension may be of  two types. 

i)  Intrahepatic portal hypertension 

ii)  Extrahepatic  portal hypertension  


Related Discussions:- Portal hypertension

Osmoregulation in aqueous environments, Osmoregulation in Aqueous Environme...

Osmoregulation in Aqueous Environments You are aware that the aqueous environments are of two types: i) Freshwater and ii) Seawater. The osmotic concentration of thes

Neo-zoonoses, Neo-zoonoses In recent times, some of the pre-existing l...

Neo-zoonoses In recent times, some of the pre-existing low profile and less frequent zoonoses and some entirely newly recognized zoonoses are emerging with a new dimension. Th

Abiotic factors of an ecosystem, Q. How does biological diversity relate to...

Q. How does biological diversity relate to the characteristics of the abiotic factors of an ecosystem? The ease of use of abiotic factors like light, mineral salts, moisture, h

Phosphorylation of fructose-6-phosphate, Phosphorylation  of  fructose-6-...

Phosphorylation  of  fructose-6-phosphate Phosphorylation  of  fructose-6-phosphate: This  is  an irreversible reaction, catalyzed byphosphofructo72Snase,  (PFK-  I) a rate-l

Explain properties related to protein-protein interactions, Explain Propert...

Explain Properties related to protein-protein interactions? Properties related to protein-protein interactions include dough formation, one of the important functional properti

What do you mean by astigmatism and presbyopia, Q. What are astigmatism and...

Q. What are astigmatism and presbyopia? Presbyopia is the visual impairment in which there is loss of the cililary muscle strength thus reducing the ability of the crystalline

Why is sub-culturing essential in plant tissue culture, Why is sub-culturin...

Why is sub-culturing essential in plant tissue culture? Explain the process of heterosis. How is it dissimilar from inbreeding depression? Where and how is urea produced in

Explain nutrition monitoring and evaluation, Nutrition Monitoring and Evalu...

Nutrition Monitoring and Evaluation Monitoring and evaluation is an essential step in the nutritional care process and  is very important too. Monitoring specifically refers to

Explain nutritive and non-nutritive sweeteners, Q. Explain Nutritive and No...

Q. Explain Nutritive and Non-Nutritive Sweeteners? Nutritive Sweeteners: We know some sweeteners like glucose, honey, molasses, fruit juice, dextrose, maltose, mannitol, sorbit

Determine the term mentalis, Mentalis The mental tubercles on either si...

Mentalis The mental tubercles on either side of mental protruberance(in midline) gives origin to the mentalis muscle. Above the mentalis origin, the incisivus muscle takes orig

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