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

ASSINMENT, HISTORY ON CLASSIFICATION IN BIOLOGY

HISTORY ON CLASSIFICATION IN BIOLOGY

Define methods for studying the nutrient requirements, Define Methods for S...

Define Methods for Studying the Nutrient Requirements? 1) Population survey of nutrient intakes of healthy individuals is one method of estimating nutrient requirements. The av

What are the nucleic acids, Q. What are the nucleic acids? What is the hist...

Q. What are the nucleic acids? What is the historic origin of this name? RNA and DNA, the nucleic acids, are the molecules responsible for the hereditary information that comma

Calorie value, THE CALORIE VALUE - The amount of heat liberated fr...

THE CALORIE VALUE - The amount of heat liberated from complete combusion of 1gm food in a bomb caloriemeter (a closed metal chamber filled with O ) is its gross calorific

Explain the function of cell walls, What is plant cell walls made of? ...

What is plant cell walls made of? Explain the function of cell walls? Plant cell walls are made of cellulose embedded in carbohydrates and proteins. Cell walls help su

Define the sources of vitamin d, Define the Sources of Vitamin D? Vitam...

Define the Sources of Vitamin D? Vitamin D, also called the sunshine vitamin is easily manufactured in the skin from 7-dehydro cholesterol on exposure to sunlight, as already m

Hemoglobin, describe the mechanism of allosteric change.

describe the mechanism of allosteric change.

Osmoregulation in marine non-chordate metazoans, Osmoregulation in Marine N...

Osmoregulation in Marine Non-Chordate Metazoans Studies on the osmotic pressure of body fluids of marine organisms have displayed that their internal osmotic pressure is more

Meteorological factors and air pollution, Meteorological Factors and Air Po...

Meteorological Factors and Air Pollution Air pollution levels in a region are affected by wind, location, topography, precipitation and temperature inversions. Wind can carry

Noise pollution - environmental pollution, Noise Pollution - Environmental ...

Noise Pollution - Environmental Pollution Noise is unwanted sound or excessively high levels of sound. Noise pollution is not only an annoyance, but at sufficiently high level

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