NABTEB QUESTIONS

State THREE differences between open and closed system of circulation. – NABTEB QUESTION
OPEN SYSTEM CIRCULATION CLOSE SYSTEM CIRCULATION
Heart not chambered Chambered heart
Few short blood vessels for a short distance and for a while Blood flows in long vessels all the time
Blood flows into coelum for some time Blood remains in vessels throughout
No capillaries Presence of complex network of capillaries
Organs are bathed by blood Organs are supplied with blood by vessels

 

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