Draw and label the following graphs: a) Graph the effect of ventilation on arterial PCO2. b) Graph the effect of ventilation on arterial PO2. c) Graph the changes in PO2 in the trachea during one respiratory cycle. The Y-axis should include accurate numerical values.

Which of the following is the respiratory membrane composed of? A) respiratory bronchioles and alveolar ducts b) respiratory bronchioles and alveolar sacs d) alveolar sacs and alveolar ducts e) alveolar and capillary walls and their fused basement membranes

When determining Resting Respiration Rate, you should a) Watch and count the number of times the chest raises and falls. b) Count each time the chest raises and falls over a minute. c) Not let the person know you are counting their breathing rate. d) All of the above are correct.

Which of the following would increase the diffusion of oxygen from the alveoli into the bloodstream?     a)  A decrease in total lung capacity   b)  A decrease in circulating red blood cells in the blood   c)  An increase in the partial pressure of oxygen in the blood vessels surrounding the alveoli   d)  An increase in the number of blood vessels surrounding the alveoli   e)  A decrease in the pressure gradient between the alveoli and the bloodstream