Blood coagulation factor - circulation, Biology

Assignment Help:

Blood coagulation factor - Circulation

The catalytic sequence of events behaves like an enzyme cascade with each product of a reaction being responsible for the activation of the next reaction. At least 13 different plasma factors have been recognised. A deficiency of even one factor can delay or prevent clotting. Why has such a complex mechanism evolved? Maybe it is essential to have a number of initial clotting responses to a variety of internal and external stimuli that can cause haemorrhage. At the same time, any ambiguous stimuli would not be able to cause intravascular clotting when no injury occurs. Coagulation of blood is inhibited by heparin, a mucopolysaccharide that can be isolated from mammalian liver. A haemostatic mechanism is necessary for most animals. In open circulation the contraction of blood vessel to prevent blood loss does not help, but then open systems have low blood pressure and thus decrease the ' chances of large blood losses.

                                                 Table: Blood coagulation factor

1068_Blood coagulation factor - Circulation.png

Clotting mechanisms are also seen in invertebrates. The simplest mechanism is the agglutination of blood corpuscles without the involvement of plasma proteins. A cellular meshwork forms which helps to close the wound. Contraction of muscles also helps in this process.


Related Discussions:- Blood coagulation factor - circulation

Empirical validity of test procedures, Empirical validity of test procedure...

Empirical validity of test procedures Reitan's great concern has always been with the empirical validity of test procedures. Such validity can only be established by the collec

Obelia, why obelia shows an intermediate grade of organisation

why obelia shows an intermediate grade of organisation

Purchasing of service, Normal 0 false false false EN-IN...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Difference between other eukaryotic cells , Difference between other eukary...

Difference between other eukaryotic cells ? Cell Wall :  In addition to the presence of photosynthetic plastids, another significant difference between other eukaryotic cell

Monosaccharides, MONOSACCHARIDES Simple carbohydrate monomers, whi...

MONOSACCHARIDES Simple carbohydrate monomers, which cannot be hydrolysed further into simpler or smaller subunits. Monosaccharides are generally colourless, crystallin

Origin and delivery - transport in phloem, Origin and Delivery - Transport ...

Origin and Delivery - Transport in Phloem We have stated above that transport of photosynthates starts from leaves and ends up in one or the other sink tissue. Though this is

What would be its final volume, Consider a simple spherical model cell that...

Consider a simple spherical model cell that consists of cytoplasm and a plasma membrane. The cell's initial volume is 2 nL and contains 0.2 M protein. The cell is placed in a la

Explain single pan balance and Electronic Digital Balance, Explain single p...

Explain single pan balance and Electronic Digital Balance? Single Pan Balance: This is a very sensitive balance used for weighing quantities less than 10 grams. It accurately w

What are proteins and why they are important for us, What are Proteins and ...

What are Proteins and Why they are important for us? We just read that proteins are essential for maintaining and sustaining life. What are proteins or what constitutes protein

Define briefly about the cereal proteins, Define briefly about the Cereal P...

Define briefly about the Cereal Proteins? Cereal grains, properly ripened and dried for optimum storage stability, have protein content ranging from 6-20%. Proteins are found i

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