Body Fluids and Circulation
Give the difference between open and closed system of circulation.
|Open system of circulation||Closed system of circulation|
|1||It is present in lower organisms, eg., cockroach.||It is present in higher organisms, eg., human.|
|2||In this system blood flows through open spaces thus, blood is in direct contact with tissue fluids.||In this system blood flows through closed system of blood vessels thus, blood is in indirect contact with tissue fluids.|
|3||In this system, blood pressure is low hence, this system is less active than closed system of circulation.||In this system, blood pressure is high hence, this system is more active than open system.|