Question

Q4 How are the alveoli designed to
maximise the exchange of gases?
as Describe double cerculation in human
beings why is it necessary?​

Answer 1

Hey mate here is ur answer

Alveolis are designed as a balloon like structure to maximise the exchange of gases and are richly supplied with blood vessels to take the oxygen to diffrnt cells. They are present at the terminal bronchiles.

Alveolis are designed as a balloon like structure to maximise the exchange of gases and are richly supplied with blood vessels to take the oxygen to diffrnt cells. They are present at the terminal bronchiles. Double Circulation :- The heart belongs of 2 sides right n left. The right side of the heart recives de-oxygenated blood from the cell and the tissues& send it further for purification to lungs. The left side of the heart recives oxygenated blood which pumped as double circulation. The energy demand of human beings is too large & hence it is necessary to separate.

I hope it helps u... mark it as a brainliest ans.

# Follow me ~♥~