Circulatory system, Biology

Assignment Help:

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.


Related Discussions:- Circulatory system

Viriods and prions, Viriods and Prions Viroids        In 1971, T.O...

Viriods and Prions Viroids        In 1971, T.O.Diener reported that the  spinde tuber disease of potato causing gnarling and cracking of the tuber, is caused by multiplica

Educate the mothers regarding prevention of diarrhoea, Educate the Mothers ...

Educate the Mothers Regarding Prevention of Diarrhoea   While working  in the diarrhoea clinic, ward or community, your major responsibility as a nurse is to educate mothers re

Briefly explain about gelation, Explain Gelation Gelation, which occurs...

Explain Gelation Gelation, which occurs when yolk is frozen and thawed, is apparently due to the aggregation of yolk lipoproteins because  of the imbalance and shift in water.

What are the advantages of intra oral periapical radiographs, Advantages of...

Advantages of Intra Oral Periapical Radiographs a) It is a useful high yield modality for ruling out local bone or dental disease b)  It is of value in identifying critical

Kingdom animalia, in what order did the shellfish belong? in what genus did...

in what order did the shellfish belong? in what genus did the shellfish belong? in what species did the shellfish belong?

Explain prophylaxis of lyme disease, Explain Prophylaxis of lyme disease ...

Explain Prophylaxis of lyme disease No vaccine is currently available to prevent Lyme disease in humans. Avoidance of ticks and use of tick repellents such as DEET or picaridin

Animals in the community - nature of community, Animals in the Community - ...

Animals in the Community - Nature and Structure of Community The animals in the community are directly or indirectly dependent on the plants also time their activities in such

Grow Ligth Colors, What colors of light are needed in a grow light for stra...

What colors of light are needed in a grow light for strawberry development?

Paediatric nursing, PAEDIATRIC NURSING   Parent education, family healt...

PAEDIATRIC NURSING   Parent education, family health promotion and health maintenance have been the concern of yesterday's and today's nurses. Florence Nightingale over a hu

An experiment to determine which seed is best for lawn, Assume that your ya...

Assume that your yard has many tall trees that result in about fifty percent of the yard being shaded and fifty percent of the yard being exposed to full sun. The shaded areas and

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