Blood clotting, Biology

Assignment Help:

BLOOD CLOTTING -

  • It is a nature's device to check the excessive loss of blood from an injury.
  • Bleeding time is 1-3 minutes. Clotting time is 2-6 minutes.
  • Process of clotting is initiated by platelets / Thrombocytes.
  • After clotting remaining part is serum. Clotting is a bio-chemical reaction, explained by Hobel.
  • Clotting theory is given by cascode. Vit. K is necessory for clotting.
  • In haemophillia (sex-linked inheritance) VIII factor is absent so injection of AHG (Anti haemophilic globulin) are given.
  • At the point of injury serotonine & thromboplastin (lipoprotein) are released.
  • Serotonine is helpful in vaso constriction. Thromboplastin helps in the formation of prothrombinase.
  • In presence of prothrombinase prothrombin is converted into thrombin.
  • Thrombin reacts with fibrinogen in presence of air & Ca++ to form fibrin. Network of fibrin forms clot.
  • In presence of XII factor (Hagmen factor / glycoprotein) danse net is formed.

Related Discussions:- Blood clotting

Theory of evolution, Evolution: This deals with the origin of newer types o...

Evolution: This deals with the origin of newer types of organism from the previous ones by modification involving genetic changes and adaptations. Evolution also called as biologic

Biological evolution, Natural selection is a process which directs all biol...

Natural selection is a process which directs all biological evolution. It is a process that directs genetic changes which when proved to be adapted to the environment are retaine

Find which two amino acids make up this pocket, Sickling occurs in deoxyhem...

Sickling occurs in deoxyhemoglobin, but not in oxyhemoglobin. Normal deoxyhemoglobin (HbA and HbS) molecules have a small hydrophobic "pocket" on the surface of a ? chain. In oxyhe

Explain about vascular cambium, How can the age of a tree be estimated from...

How can the age of a tree be estimated from the analysis of the rings present on a cross section of its stem? For the growth of the tree it is essential to have formation of ne

Explain the bio availability of vitamin a, Explain the Bio availability of ...

Explain the Bio availability of Vitamin A? By now it is clear that vitamin A is supplied in two forms. One form is retinol, from animal foods such as liver, fatty fish, eggs, a

Explain zidovudine, Zidovudine Zidovudine is available alone and in fix...

Zidovudine Zidovudine is available alone and in fixed-dose combinations with lamivudine as Combivir and with lamivudine and abacavir as Trizivir. It can be given in combination

Gastropods - feeding and digestion in molluscs, Gastropods - Feeding and Di...

Gastropods - Feeding and Digestion in Molluscs In several gastropods the digestion is extracellular. Though, some herbivore gastropods like Crepidula are ciliary feeders and h

Explain brefiely the chemical equations, Explain brefiely the chemical equa...

Explain brefiely the chemical equations? Chemical Equations :  A chemical equation is a shorthand way of describing a chemical reaction. For example, in the formation of wate

Determine the lateral cephalometric skull view, Determine the Lateral Cepha...

Determine the Lateral Cephalometric Skull View The use of this modality is limited in preoperative evaluation in implant placement for advance cases where there is a need for b

Determine the characteristics of soil profile, Characteristics of Soil Prof...

Characteristics of Soil Profile  The profile characteristics studied in the field consist of locating the soil hor izons (based on its colour description that includes the  col

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