Question
Focus is on the physiological sequence of events that causes a bulk volume of air to move through the system. (Difficulty level 2) a. Diaphragm relaxes b. Diaphragm contracts c. Old (oxygen depleted) air passes through the trachea, down its pressure gradient d. Fresh air passes through the trachea, down its pressure gradient e. Space in the lungs increases(lung volume increases) f. Space in the lungs decreases (lung volume decreases) Correct order: __________ Focus is on the anatomical order of structures that a bulk volume of air moves through as it passes through the system). 1. Anterior air sacs fill with air 2. Posterior air sacs fill with air 3. Oxygen depleted (old) air passes through the trachea 4. Fresh air passes through the trachea 5. Air passes across the lungs and gas exchange with the blood occurs Correct order: ______________
Explanation / Answer
Example 1 correct order:
b---> e ---> d ---> a ---> c ---> f
Example 2 correct order:
4 ---> 2 ---> 1 ---> 5 ---> 3