Question

List three characteristics of lungs which make it an efficient respiratory surface.
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Answer 1

Answer:

Three Characteristics Of Lungs Which Make Them An Efficient Respiratory Surface Are:

• They Have A Rich Blood Supply.

• Their Inner Surface Is Moist.

• They Have Large Combined Surface Area

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Answer 2

Answer:

(i) It has large surface area and branched.

(ii) Contain an extensive network of blood vessels.

(iii) It is thin, delicate and fine.