Question

Differentiate between open and closed system of circulation.

Answer 1

Open circulating system	Closed circulating system
(a) Blood flows through open spaces and channels.	(a) Blood flows through heart and closed blood vessels.
(b) Sufficiently high blood pressure cannot be maintained	(b) Sufficiently high blood pressure can be maintained.
(c) The volume of blood flowing to different tissues cannot be regulated.	(c) The volume of blood can be regulated.
(d) Blood flows at a slow velocity.	(d) Blood flows at a higher velocity.
(e) Body tissues are in direct contact with blood.	(e) Body tissues do not come in contact with blood.