Question

Which of the following is not a characteristic of human lungs

a)Both right and left lungs are composed of three lobes

b)Bronchi divide to form bronchioles

c)Capillary supply is abundant to facilitate gas exchange with the blood

d)The alveoli are tiny air sacs arranged in clusters

free points ​

Answer 1

Answer:

What is pulmonary circulation? When you breathe in (inhale), air containing oxygen enters your windpipe, passes through the bronchi and eventually reaches the air sacs. These air sacs, called alveoli, are responsible for gas exchange. They look a bit like grapes at the end of the bronchial branches.

Answer 2

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The characteristics of a respiratory surface are thin walls, a moist inner surface, a huge combined surface area, a rich blood supply each alveolus is sounded by capillaries. Surfaces which dries out easily, thick and easily damaged are not a characteristic of good respiratory surface.