When the level of blood flow is not ideally matched with the amount of airflow in a localized area of lung tissue:
A) Autoregulatory mechanisms are invoked.
B) The autonomic nervous system couples the events more ideally.
C) And if airflow is low and blood flow too high, arteriolar vasoconstriction occurs.
D) Autoregulatory mechanisms are invoked and the autonomic nervous system couples the events more ideally.
E) Autoregulatory mechanisms are invoked and, if airflow is low and blood flow too high, arteriolar vasoconstriction occurs.

Question

Quizplus · Accepted Answer

Autoregulatory mechanisms in the lungs help match blood flow to airflow. If airflow is low and blood flow is too high, arteriolar vasoconstriction occurs to redirect blood flow to better-ventilated areas.

When the Level of Blood Flow Is Not Ideally Matched