Circulatory system, Biology

Circulatory System

Coelenterates and platyhelminths nutrients in sponges, respiratory gases and waste materials can easily diffuse through the intercellular spaces. Though, in higher animals the circulatory system gives a medium through which oxygen and nutrients from the environment reach all the tissues of the body and carbon dioxide also nitrogenous waste materials are removed from the body into the external environment. The circulatory system consists of generally blood, the blood spaces and a series of tubes called vessels. Circulatory systems can be split into a number of components along with similar functions. In addition to the circulating fluid, these contain:

i) A main propulsive organ, generally a heart which forces blood around in the body,

ii) An arterial system that serves to distribute blood and as a pressure reservoir,

iii) Capillaries, or in some animals blood spaces, where transfer of materials take place between blood and tissues, and

iv) The venous system which acts as a blood reservoir and as a system for returning blood to the heart.

Posted Date: 2/4/2013 5:57:15 AM | Location : United States







Related Discussions:- Circulatory system, Assignment Help, Ask Question on Circulatory system, Get Answer, Expert's Help, Circulatory system Discussions

Write discussion on Circulatory system
Your posts are moderated
Related Questions
Define Preparation of Dilutions - Standard or Total Plate Counts? 1. Serial dilution of homogenized sample in an appropriate diluent. Preparation of dilutions - Decimal dilu


Explain the following and give their values in a normal human adult: a) Tidal volume b) Expiratory reserve volume c) Inspiratory capacity.

what is Algae

Define Potential Health benefits from resistant starch? Like dietary fibre, RS can also play a potential role in helping to maintain or improve health of an individual. As you

Define Precautions for Testing Quality of Water? 1. Handle the sewage water with care as it may contain enteric pathogens. 2. Sewage and pond water should be shaked before i

Hepatitis A Hepatitis A vaccine (Havrix - GlaxoSmithKline; Vaqta Merck) is recommended for all susceptible travelers going anywhere other than Canada, Australia, New Zealand,

Q. In which period of meiosis does the pairing of homologous chromosomes occur? The pairing of homologous chromosomes is a very important step for meiosis because the rightness

What are the Preservation of Insulin Regular insulin is stable for 18 months at 23.8 0 C and Lente insulin are stable for 24 months at this temperature. Although refrigeration

Aerobic Exercises, Examples and their Do's and Don'ts In the aerobic exercises it requires activities performed for a longer period here we do like to mention certain activitie