Question

RANKA
23. a) Double double conculation in human beings
b) Why is it necessary?
c) school are arteries different
for veins​

Answer 1

Answer:

sorry I don't know

but I hope u get the answer soon

Answer 2

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1. What is double circulation in human beings ?

2. Why the double circulation is necessary?

3. How are arteries different from veins ?

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1. Double circulation in human beings occur in Heart . The Heart pump the blood through aorta and then send to the lungs through pulmonary veins. The deoxygenated blood from lungs again move to heart and then again pump by blood .

2. Double circulation us important in human beings because it separate deoxygenated and oxygenated blood because this makes their circulatory system is more efficient and helps in maintaining constant body temperature.

3. Arteries carry oxygenated blood to all body parts, whereas, veins carry the deoxygenated blood to the heart.

• The arteries carry blood away from the heart; the veins carry it back to the heart

• Arteries are thick while , veins are thin .

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