Question

Give one word for the following.

A membrane enveloping the lungs.

Answer 1

Lungs:

1. The lungs are protected outside by two membranes caller outer pleura and inner pleura.
2. The space between these two membranes is filled with fluid called pleural fluid.
3. The function of this layer is to keep the lung surface moist for the diffusion of gases.
4. This fluid also provides lubrication.