This preview shows page 1. Sign up to view the full content.
Unformatted text preview: e. air is flowing into the lung. 3. In which one of the following situations would you expect hemoglobin to have the lowest binding affinity for oxygen? (a) a. in your thigh muscle after you have been running for a minute b. just below the surface of the skin on a cold day c. in the pulmonary vein d. in the kidney e. in the lung 4. Why must a person floating on the surface of the water and breathing through a snorkel increase tidal volume and/or breathing rate to maintain normal alveolar ventilation? (a) a. The lumen of the snorkel introduces additional dead space, adding to the residual volume of the airways. b. Breathing through the mouth introduces more airway resistance than breathing through the nostrils. c. Breathing through a snorkel decreases the total resistance of the airways to air flow. d. Water pressure compresses the chest cavity, making breathing more difficult....
View Full Document
This note was uploaded on 07/15/2009 for the course BISC 220 taught by Professor Mcclure during the Spring '09 term at USC.
- Spring '09