Circumventricular Organs in the Wall of the Third Ventricle Lack

Multiple Choice

Circumventricular organs in the wall of the third ventricle lack a blood-brain barrier. This enables them to

A) facilitate the circulation of cerebrospinal fluid in the ventricles.
B) monitor the chemical composition of the blood.
C) secrete cerebrospinal fluid into the ventricles.
D) all of these choices.