Lizette Cervantes - undefined
RESPIRATION > Altering Body Position -- PRE-LAB QUIZ. undefined The student viewed all of the video clips in the Wet Lab.
1. Oxygen and carbon dioxide exchange takes place between the blood and the air in the (human) lungs across the walls of:
Your answer was: B. only the alveoli. That answer is correct.
2. At the alveoli, the diffusion of gases between the air and blood is facilitated by: Your answer was: D. all of the other options are true. That answer is correct.
3. When a fluid (like blood) travels against the force of gravity, the pressure:
Your answer was: B. decreases. That answer is correct.
4. Blood flow to a group of alveoli will decrease if:
Your answer was: C. the level of oxygen in the alveoli decreases. That answer is correct.
5. Pulmonary capillaries close if the arterial blood pressure:
Your answer was: A. decreases. That answer is correct.
You gave 5 correct answers out of a possible 5.
You restarted the Pre-lab quiz 1 time.

Lizette Cervantes - undefined
RESPIRATION > Altering Body Position -- POST-LAB QUIZ. undefined
1. According to your results, changing body position from standing to lying:
Your answer was: A. decreased the tidal volume. That answer is correct.
2. The exchange of oxygen and carbon dioxide between the air in the lung and the pulmonary blood supply takes place:
Your answer was: A. across the walls of the alveoli. That answer is correct.
3. During the breathing cycle, air enters the alveoli and the airways. If the airway volume is about 150 mL, according to your data, how much air entered the alveoli when the volunteer was standing?
Your answer was: C. The tidal volume -â the airway volume; about 225 mL.
That answer is correct.
4. What happened to the amount of fresh air entering the alveoli when the virtual volunteer lay down and the tidal volume decreased?
Your