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

Possible errors in drug administration, POSSIBLE ERRORS IN DRUG ADMINISTRAT...

POSSIBLE ERRORS IN DRUG ADMINISTRATION There can be various reasons for error in administering drugs: i) Poor communication of intention by the prescriber. ii) Failur

Female reproductive system - ovaries, OVARIES - 2 in number (didelph...

OVARIES - 2 in number (didelphic). White / pinkish. Almond like. 3 cm long, 2 cm wide, 1 cm thick. Lie in the lower part of abdomen attached to dorsal wall by mesovarium.

Define excretion of methyl malonic acid in urine, Define Excretion of Methy...

Define Excretion of Methyl malonic acid in urine (Methyl malonil aciduria)? Methyl malonic acid is found only in traces in normal urine (1-2 mg/day). In vitamin  B 12 deficie

What are diastolic compressive forces, Q. What are Diastolic Compressive Fo...

Q. What are Diastolic Compressive Forces? Coronary perfusion pressure equal to pressure gradient between the coronary arteries and the pressure in LV in diastole. When coronary

Do sponges have circulatory system, Q. Do sponges have circulatory, nervous...

Q. Do sponges have circulatory, nervous and excretory systems? Sponges do not have a nervous system neither excretory system nor circulatory system.

Define information required for management of emergencies, Define Informati...

Define Information Required for Management of Emergencies? Management or intervention needs accurate information about the actual situation and includes many non-nutritional co

Explain about the term- therapeutic, Explain about the term- Therapeutic ...

Explain about the term- Therapeutic Therapeutic approaches that scientists are pursuing include transplanting cells to replace those which are damaged or using growth factors

Explain why statement is logical in terms of kin selection, Biology once sa...

Biology once said why this statement is logical in terms of kin selection and use the coefficient of relatedness he'd be willing to lay down his life to save two brothers or eight

Protozoa., state 5 advantages and disadvantages of protozoa

state 5 advantages and disadvantages of protozoa

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