Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Viscosity - Blood Flow
The resistance to flow in a tube results from inner friction in the fluid i.e. the viscosity. We all know that water and sugar syrup do not flow at the same rate from a bottle. We can say that water has low viscosity and syrup, a high viscosity. For convenience viscosity of a fluid is expressed relative to the viscosity of water. Blood plasma has a relative viscosity of 1.8 mostly as a result of the 7% dissolved proteins. Whole blood is more viscous because of the cells in it, at 37?C, relative viscosity of mammalian blood is between 3 and 4. Therefore, because of the presence of RBC blood behaves as though it is 3-4 times more viscous than water. However, blood does not behave as expected of a viscous fluid.
Its relative viscosity changes with decreasing radius of the blood vessels. In fact in tubes less than 0.3 mm in diameter the relative viscosity of blood approaches that of the plasma, therefore, it flows more easily. In flowing blood, we find that the red cells tend to accumulate in the centre. This accumulation leaves the wall relatively free of cells, therefore, the viscosity in the centre is more than at the sides. Since flow is inversely related to viscosity, flow at the walls will increase slightly and will decrease at the centre slightly. Another peculiar aspect of blood flow in capillaries is that often the capillary diameter is smaller than RBC and the RBCs easily change shape to pass through the capillary. This gives rise to a very different type of flow - bolus flow in which the red cells act as a plug that causes rapid increase in liquid along the walls of the capillary and thus help in the renewal of the diffusible substances in this layer.
Analytic Characters - Nature and Structure of Community As you know a community has its own characteristics. Which are not shown by its individual component species. These cha
Behavior Change Communication (BCC) interventions that address diabetes mellitus are designed to promote behaviors that prevent diabetes and complications of diabetes. Behavior cha
point out the criticism of lamarckism in any six short points.
Determine the Steps for Withdrawing the Insulin The important thing about measuring a dose is to use the front of the plunger not the back - Check doctor's prescription.
detail study of coelenterata
How does the inflammation mechanism work? When some tissue injury happens histamine and other vasoactive substances (known as mediators of inflammation) are released, they caus
Determine the term - Neuropsychology The neuropsychology of the various modalities and domains involves applications from the knowledge base concerning the domain or modality i
Q. Use of Propionates acid in microorganisms? Propionic acid is formed from lactic acid or lactates, as a result of the bacterial action during the manufacturing of swiss chees
Cu r in g and Smoking Meat curing refers to the production of the characteristic thermally stable pink meat pigment and cured meat flavour by the action of sodium nitrite an
Q. From the intestinal lumen through to the tissues - what is the route of nutrients after digestion? Monosaccharides, mineral salts, amino acids and water are absorbed by the
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd