Illustrate pathology, Biology

Assignment Help:

Q. Illustrate Pathology?

Following rheumatic fever, over next few years to decades, the typical funnel shaped mitral valve assumes a fish mouth appearance. During rheumatic fever endocardium of the leaflets gets inflamed, edematous and develops pin head vegetations at the tips or along the line of closure. These heal with fibrosis resulting in thickening of the leaflets with limited mobility. Some times there may be calcific deposits over the leaflets. The commissures get fused and in diastole the larger anterior leaflet pulls the posterior leaflet anteriorly. This decreases the valve opening in diastole. Thickened and fused chordae further limit the opening of the valve. Subvalvular apparatus, i.e., the chordae may fuse to such an extent that a secondary orifice may develop below the mitral valve limiting the diastolic blood flow. The abnormal valvular flows due to initial valvulitis may further worsen the thickening and fibrosis of the leaflets progressively. The progression may be rapid in some patients due to repeated attacks of rheumatic carditis, genetic or hormonal factors or due to increased hemodynamic load as seen in manual laborers.


Related Discussions:- Illustrate pathology

What do you understand by larval amplification, What do you understand by L...

What do you understand by Larval amplification? A form of asexual reproduction where, during life cycle, a single larval organism can produce large numbers of the next developm

Which compounds results from cyclization of glucose, Which of the following...

Which of the following compounds results from cyclization of glucose? Select one: a. alpha-D-glucopyronose b. beta-D-glucopyronose c. alpha-D-glucofuranose d. beta-D

Sources of water are to contain pathogenic bacteria, What sources of water ...

What sources of water are (a) most likely, (b) least likely to contain pathogenic bacteria?   (a) Water most likely to have pathogenic bacteria will be that which receives u

Are all pneumonias caused by bacteria, Q. Are all pneumonias caused by bact...

Q. Are all pneumonias caused by bacteria? The Pneumonia is the generic name of inflammation of the lungs. Moreover bacterial pneumonias, there are pneumonias caused by fungi, v

Illustrate about components of an angioplasty system, Q. Illustrate about C...

Q. Illustrate about Components of an Angioplasty System? 1) Guiding catheter: The ideal guiding catheter must have a lumen diameter i.e. at least twice that of the diagnostic c

What are holandric genes, What are holandric genes? The Holandric genes...

What are holandric genes? The Holandric genes are genes situated in the nonhomologous region of the Y chromosome. Holandric genes condition phenotypes that emerge only in men s

Hyaluronic acid, H Y ALURONI C ACID It is formed by alternating u...

H Y ALURONI C ACID It is formed by alternating unit of D-glucuronic acid and N-acetylglucosamine. Hyaluronic acid acts as animal cement between adjacent animal cells

Explain anaerobic nitrogen-fixer, One of the free-living, anaerobic nitroge...

One of the free-living, anaerobic nitrogen-fixer is: 1. Beijernickia 2. Rhodospirillum 3. Rhizobium 4. Azotobacter Rhodospirillum

What is temporal lobe, Mention where the following are located in the human...

Mention where the following are located in the human brain, and give single function of each: a) Temporal lobe b) Cerebellum c) Corpus callosum

Decomposers - biotic components, Decomposers - Biotic Components Also ...

Decomposers - Biotic Components Also known as saprotrophs. Mostly, these are microscopic and are heterotrophic in nature. Decomposer organisms obtain their energy and nutrient

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