Give difference between single and double circulation.?
Answers
Answer:
Explanation:
A double circulation system has the lungs on a separate ‘loop’ from the rest of the body. That allows the pulmonary (lung) circulation to operate at low-pressures suited to the delicate tissues of the lungs while the systemic (main) circulation operates at high-pressures in the rest of the body.
You couldn’t have an amphibian giraffe. With a single circulation system, if the blood pressure was high enough to pump blood up to the head, then the lungs would have to be so strongly built that they couldn’t do effective gas-exchange. If the blood pressure was low enough to allow the lungs to work – then the animal would keep fainting due to blood not reaching the brain.
Also, a double system keeps oxygenated and de-oxygenated blood separate, meaning that energy isn’t wasted pumping O22-poor and CO22-rich blood back around the body.
So the double system is just better engineering. It allows for oxygen and nutrients to be delivered more efficiently, it removes toxins more effectively and it redistribute heat better.
Answer:
Explanation:
The main difference between single circulatory systems and double circulatory systems is that in the case of single circulatory systems, blood passes through the heart only once on each circuit around the whole of the blood circulation system of the animal.