Question

state and explain 3 characteristics of respiratory surface

Answer 1

Answer:

The characteristic features of the respiratory surface are :

thin walls.

a moist inner surface.

a huge combined surface area.

a rich blood supply- each alveolus is sounded by capillaries.

Answer 2

The 3 characteristics of respiratory surface are a moist inner surface, a huge surface area, a rich blood supply.

Explanation:

Here are the main characteristics of the respiratory surface of the lungs:

1. A moist inner surface: The inner surface of the alveoli in the lungs should be moist so that the oxygen can dissolve faster into this water.

2. A huge surface area: It is an obvious fact that the surface area of alveoli should be larger so that the oxygen entering the lungs can be occupied in large amounts.

3. A rich blood supply: The alveoli have a large network of one-celled thick capillaries so that they can facilitate a large amount of gas exchange in the lungs.