At rest and during exercise,the primary factor that contributes to resistance of airflow in the pulmonary system is______________.
A)the tidal volume
B)the diameter of the airway
C)the temperature of the inspired air
D)none of the above answers are correct

Question

Quizplus · Accepted Answer

The diameter of the airway is the primary factor that contributes to resistance of airflow in the pulmonary system. As air passes through the bronchioles, the resistance increases due to the smaller diameter of the airway, leading to an increase in resistance of airflow. Tidal volume refers to the volume of air inhaled and exhaled during a normal respiratory cycle and does not directly affect resistance of airflow. Temperature of the inspired air may affect the respiratory system but does not contribute to resistance of airflow in the pulmonary system.

At Rest and During Exercise,the Primary Factor That Contributes to Resistance