Blood vessels - circulation, Biology

Blood Vessels - Circulation

The blood vessels have elastic walls and a layer of smooth muscles in their walls which enable them to change their diameter. There are three main types of blood vessels - arteries, capillaries and veins with characteristic differences among them. Arteries have relatively thick walls that consist of heavy, strong layers of elastic fibres and smooth muscles. As the arteries branch, their diameter becomes smaller and the relative amount of muscle tissue increases in proportion to the elastic tissue.

Capillaries are the smallest units, they are single cell thick. Almost all exchange between tissue and blood takes place through the walls of the capillaries. The veins also contain smooth muscles and fibres.

Posted Date: 1/15/2013 11:45:01 PM | Location : United States

Related Discussions:- Blood vessels - circulation, Assignment Help, Ask Question on Blood vessels - circulation, Get Answer, Expert's Help, Blood vessels - circulation Discussions

Write discussion on Blood vessels - circulation
Your posts are moderated
Related Questions
The first step of the purification of an integral membrane protein is to disrupt its interactions with other integral proteins and the lipids in the membrane.  This is commonly ach

Preparation for Hospitalization   Prevention is a strong component of nursing care. Preparation prior to hospitalization is  essential to make the transition from home to hospi

Although there are differences in interpretation of the evidence, it is generally accepted that human biological evolution has not been a linear progression from one species to the

Conformational Protection - Azotobacter In conformational protection a Fe-S redox protein provides protection to the enzyme. The protein gets oxidised in the presence of oxyge

Define Procedure for estimation of vitamin c - colorimetric method? Carry out the experiment following the instructions given herewith: 1. Prepare a series of tubes for blan

Osmotic Strength of the Fluids in Immediate Surrounding The availability of soluble mineral salts varies widely from habitat to habitat. In fact, a big chunk of land in our

Assessment   The severity of symptoms depend on degree of obstruction.  In case of severe obstruction,  ECG shows right ventricular or biventricular hypertrophy. Cardiac cathet

A simple osmometer Remove the bottom from a small glass bottle about 2.5 cm in diameter. Fit a one-hole stopper tightly into the bottom and put a 50 cm length of glass tubing o

by our eyes we can see the beautiful world but is there anything in our eyes which makes it beauiful??

Describe the process of Crassulacean acid metabolism. a) How is it advantageous to plants? b) Describe the major steps in Krebs cycle. Why is this cycle also called citric a