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

Describe coping strategies, Patient and his family have to cope up with a ...

Patient and his family have to cope up with a critical situation when patient has complications and more so when a patient has to be admitted in a hospital and referred. Some patie

What is chromosome mapping in phenotypic trait, What is Chromosome Mapping ...

What is Chromosome Mapping in phenotypic trait? Chromosome Mapping : By noting how often a gene segment associated with a specific phenotypic trait crossed over during meios

Explain the corpus callosum, Right-handed adult patient X with a complete t...

Right-handed adult patient X with a complete transection of the corpus callosum is presented with a simple written question in X's right visual field. A barrier is positioned so th

What is the photoperiod, What is the photoperiod? The Photoperiod is th...

What is the photoperiod? The Photoperiod is the daily time period of light exposure of a living being and the photoperiod may differ according to the period of the year.

State about the latent squint disease, State about the Latent squint diseas...

State about the Latent squint disease Latent squint is seen commonly as exophoria in infancy and presbyopic age and esophoria in childhood. Hypermetropes can have esophoria and

Where is the defect in the argyll robertson pupil, Where is the defect in t...

Where is the defect in the Argyll Robertson pupil The defect in Argyll Robertson pupil is due to light near dissociation because pupil react better to near than light.

The nurse''s role in relieving the child''s stress, The Nurse's Role  in ...

The Nurse's Role  in Relieving  the Child's Stres s Turning passive experiences into active ones that facilitate the child's healthy - Problems-I  adjustment to hospitalization

Ventricular assist devices in circulatory assist devices, Ventricular Assis...

Ventricular Assist Devices :  These come handy when IABP has failed or when prolonged circulatory support is needed. Now Ieft ventricular (LVAD), right ventricular (RVAD) and bive

Function of noradrenaline in consciousness, Q. Function of Noradrenaline in...

Q. Function of Noradrenaline in consciousness? Increased level of noradrenalin is implicated in wakefulness. Locus coeruleus noradrenergic neurons decrease their rate of firing

Effect of insulin on metabolism of carbohydrate, The foods we take have thr...

The foods we take have three basic ingredients - carbohydrate, protein and fat. Insulin has profound effects on the metabolisms of carbohydrate, protein and fat. Metabolism helps o

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