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

How implants increases the magnitude significantly, How implants increases ...

How implants increases the magnitude significantly The patient should be medically fit to undergo the surgery. Placement of one or two implants is equivalent to relatively mino

What do you mean by connective tissue proper, Q. What is connective tissue ...

Q. What is connective tissue proper? The name connective tissue proper is used to designate the connective tissue that fills interstitial spaces as opposed to the specialized c

What is a recessive gene, What is a recessive gene? With the birth of a...

What is a recessive gene? With the birth of a child, it gets its genes from both parents. Some genes 'override' other genes. Using hair color as instance: If single parent i

Define conjugation in brief, Define Conjugation in brief. A form of se...

Define Conjugation in brief. A form of sexual reproduction in ciliates (Ciliophora). During conjugation two ciliate protozoans join and macronuclei disappears. After meiotic d

Thorax and lungs, Thorax and Lungs: The  lungs, a pair of conical-shap...

Thorax and Lungs: The  lungs, a pair of conical-shaped organs lie  in  the  thoracic cavity, protected by the bony  thorax composed of the  sternum and ribs a interiorly and r

Herbage area or vegetation cover, Herbage area or vegetation cover Her...

Herbage area or vegetation cover Herbage area or vegetation cover is an important aspect of vegetation study in understanding the nature of a community particularly in evaluat

Name the vertebrate class, Which is the vertebrate class that is considered...

Which is the vertebrate class that is considered the first entirely terrestrial? The first totally terrrestrial vertebrate class, totally independent from the aquatic habitat,

What is the advantage of the double and complete circulation, How many cham...

How many chambers do the bird heart and the mammalian heart have? Concerning temperature maintenance what is the advantage of the double and complete circulation of these animals?

Define vacuum production and thermal processing - canning, Define Vacuum pr...

Define Vacuum production and Thermal processing - Canning? Vacuum production - This can be obtained by filling the heated product into the can, by heating the can and content

Etiological factors contributing to lactose intolerance, Q. Etiological fac...

Q. Etiological factors contributing to lactose intolerance? The etiological factors contributing to lactose intolerance include: • Genetic factor • Reduction in jejunal

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