How does the structure of the alveoli enhance lung function?Multiple choice question.Their maze-like shape makes the lung more resistant to infection.They increase the speed of inhalation and exhalation.They are filled with fluid that enhances gas transfer.They increase the surface area for gas exchange.

In response to exercise training, the normal lung   increases the number of alveoli. increases total lung volume. decreases anatomical dead space. does not undergo measurable changes in structure.

Define structure and functions of the pleura, bronchi, bronchioles, and alveoli.1.  The substance that lines the alveoli to help keep them open: 2.  The smallest of the airways that do not participate in gas exchange: 3.  The serous membrane that covers the lungs: 4.  The fluid that reduces friction between the lungs and the thoracic cavity:  fluid.5.  The large airway that enters each lung at the hilum:

The alveoli are tiny air sacs in the lungs where gas exchange takes place.

Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.

Recall which of the following statements about alveoli are true.They are tiny sacs within the lungsThey expand when you breathe outTheir walls are membranes that allow oxygen and carbon dioxide to diffuse throughThey are not well connected to blood vessels