Like the kidneys,the lungs demonstrate functional unity; that is,each unit is structurally and functionally identical.The basic physiological unit of the lung is the respiratory unit,which consists of:
A)Nonrespiratory and respiratory bronchioles,alveolar ducts,and alveolar sacs.
B)Respiratory bronchioles,alveolar ducts,and alveolar sacs.
C)Bronchi,nonrespiratory bronchioles,and respiratory bronchioles.
D)Conducting airways,alveolar ducts,and alveolar sacs.

Question

Quizplus · Accepted Answer

The respiratory unit of the lung consists of respiratory bronchioles, alveolar ducts, and alveolar sacs. Option A includes nonrespiratory bronchioles, which are not part of the respiratory unit. Option C includes bronchi, which are larger airways and not part of the respiratory unit. Option D includes conducting airways, which are not part of the respiratory unit.

Like the Kidneys,the Lungs Demonstrate Functional Unity; That Is,each Unit