Capillaries - circulation, Biology

Assignment Help:

Capillaries - Circulation

We know that most tissues have such an extensive network of capillaries that any single cell is hardly 2-3 cells away from any capillary. The small terminal arteries subdivide to form arterioles which divide to form metarterioles and then capillaries, which rejoin to form the venules and veins.

The smooth muscles of the arterioles become discontinuous in the metarterioles and end in a muscle ring the precapillary sphincter that controls the blood supply to each capillary bed. Through the precapillary sphincters, the capillary bed can be bypassed altogether and blood can be diverted to areas of greater demand. All capillaries of an animal have the potential to hold 14% of the total blood volume. However, only 30% to 50% of all capillaries are open at a time and thus only 5-7% of the total volume is contained in them.


Related Discussions:- Capillaries - circulation

Initiation of development - development biology, Initiation of Development ...

Initiation of Development - Development Biology We know that the various events collectively called the activation programme. These events are directly related to the formatio

Stratification, Stratification On the basis of the variation in air tem...

Stratification On the basis of the variation in air temperature. the atmosphere has been divided vertically into four layers: (figure shown below) thee troposphere, stratospG,

Factors influencing the supply of health care, Normal 0 false ...

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

The urea cycle, The urea cycle which is also known as the ornithine cycle i...

The urea cycle which is also known as the ornithine cycle is a cycle of biochemical reactions occurring in several animals which produces urea ((NH2)2CO) from ammonia NH3. That cyc

Pericardial window through left antero lateral thoracotomy, Pericardial Win...

Pericardial Window Through Left Antero Lateral Thoracotomy :  A small left antero lateral thoracotomy is done through the 5"' intercostal space. A pericardial windo

What is total amount of both reactants and products decrease, In Chemical R...

In Chemical Reactions that have a large negative /\Go' a- the total amount of both reactants and products decreases b- the products are less stable than the reactants c- t

What are the types of leukocytes, What are the types of leukocytes and how ...

What are the types of leukocytes and how are they classified into granulocytes and agranulocytes? The types of leukocytes are monocytes, lymphocytes, neutrophils, eosinophils

Explain adverse effects of foscarnet, Explain Adverse Effects of foscarnet ...

Explain Adverse Effects of foscarnet  Renal dysfunction often develops during treatment with foscarnet and is usually reversible, but renal failure requiring dialy sis may occu

Children with infective endocarditis, Among neonates, IE typically involves...

Among neonates, IE typically involves the tricuspid valve of structurally normal hearts and is associated with very high mortality rates.  It is likely that many of these episodes

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