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

Phases of karyokinesis, Phases of Karyokinesis: Karyokinesis can furth...

Phases of Karyokinesis: Karyokinesis can further be divided into prophase, metaphase, anaphase and telophase. 1-Prophase: (pro= before) Chromatin: During Interphase (non

Golgi complex, GOLGI COMPLEX ( GOLGI APPARATUS = GOLGI BODY) The Nobel ...

GOLGI COMPLEX ( GOLGI APPARATUS = GOLGI BODY) The Nobel laureate, Camilla  Golgi (1898)  discovered  the  presence of a special,  small group  of interconnecting  membranous  s

Influence of yolk on cleavage, Influence of Yolk on Cleavage Though b...

Influence of Yolk on Cleavage Though biological significance of yolk is to provide nourishment to the developing embryo, it is not part of the active cytoplasm. Yolk is dead

Describe palynological evidence, Q. Describe Palynological Evidence? Pa...

Q. Describe Palynological Evidence? Palynology is the study of pollen and spores. The taxonomic characters of pollen grains include wall structure, polarity, symmetry, shape an

How do placental mammals reproduce, How do placental mammals reproduce? ...

How do placental mammals reproduce? Placental mammals reproduce sexually, they have internal fecundation and they are viviparous, i.e., their embryo creates within the mother's

Biodiversity as products, Individual components of biodiversity provide an ...

Individual components of biodiversity provide an unbeliev able wide range of products that are used to enhance the lives of people in all countries of the world. It is the diversit

How much time is required for a single cell, How much time is required for ...

How much time is required for a single cell of Detoxivicatium completeium to grown into a population large enough to fill the volume of the earth?

What is emulsion, Emulsions  You may have eaten Mayonnaise. Some  of yo...

Emulsions  You may have eaten Mayonnaise. Some  of you may also know how it is made. Mayonnaise is a liquid in liquid  dispersion, in fact a true  emulsion.  A true emulsion re

Define the estimation of haemoglobin in blood, Define the Estimation of Hae...

Define the Estimation of Haemoglobin in Blood? Several methods are used to determine haemoglobin. In these methods hemoglobin is measured as oxyhaemoglobin, carboxyhaemoglobin,

What are the major cells of the connective tissue proper, Q. What are the m...

Q. What are the major cells of the connective tissue proper? What is the name given to the intercellular material that surrounds these cells? The major cells of the connective

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