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

Fossils, what year was homo erectus fossils found

what year was homo erectus fossils found

Define stress factors - etiological risk factors in cancer, Define Stress F...

Define Stress Factors - Etiological Risk Factors in Cancer? Emotions playing a part in malignancy are not a new idea. But these relationships are extremely difficult to measure

Proteins, what is he importance of proteins for living beings

what is he importance of proteins for living beings

Define the materials used in perforation repair, Define the Materials Used ...

Define the Materials Used in Perforation Repair 1- Barrier material: Restorable barrier. UN Restorable barrier   2- Function of barriers: provide m

Xenotransplantation, X e n o t r a n s p l a n t a t i o ...

X e n o t r a n s p l a n t a t i o n Over the past 20 years transplantation of heart and kidney has become almost a routine in human but the availability of

Single vessel disease, Single Vessel Disease (SVD) :  They do well on medi...

Single Vessel Disease (SVD) :  They do well on medical treatment or with angioplasty. However if proximal LAD is significantly blocked and LIMA can be used as a conduit, surgery g

the standard error to be different, Out of 67,410 randomly selected surger...

Out of 67,410 randomly selected surgeries tracked in a study in the UK, 2832 were followed by surgical site infections. a.    What is the best estimate of the probability of an

What is expression of the dominant phenotype, If we make a cross of two phe...

If we make a cross of two phenotypically WT zebrafish, and we get the following results, what can we say about the genotype of those two WT looking parents from the following resul

Effects of earthquakes on buildings, The dynamic response of the building t...

The dynamic response of the building to earthquake ground motion is the most important cause of damages to the building that are induced by earthquake. Failure of the ground and so

Define sympathetic and the parasympathetic neural actions, Q. What is the a...

Q. What is the antagonism between the sympathetic and the parasympathetic neural actions? In general the action of the parasympathetic and the sympathetic are antagonistic that

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