Psychology 2036A/B Lecture Notes - Lecture 14: Exhalation, Bronchus, Trachea

• School: Western University
• Department: Psychology
• Course: Psychology 2036A/B
• Professor: Doug Hazelwood

Document Summary

Near- constant, one- way airflow through their lungs. As they inhale and exhale the air that ultimately flows through the lungs is always going to. Sequence by which they can store air in sacks within their lungs and as air is blown out of fresh air from those sacks is blown into the lungs. This is how they can fly so high even though o2 conc. decreases in higher altitudes. On first inhalation, air flows through the trachea and bronchi, primarily into the pos. On exhalation, air moves from the posterior air sacs into the lungs. With the second inhalation, air moves from the lungs into the anterior air sacs. With the second exhalation, air moves from the anterior air sacs back into the trach g to be fresh air t of the lungs the es posterior air sacs trachea and then out. Within pleural space we have a vacuum (no air within that space, just a little fluid)