23.In our body, involuntary actions are controlled by which of the following? [A] Medulla in Hindbrain [B] Medulla in Forebrain [C] Medulla in Spinal Cord [D] Medulla in Midbrain
Medulla oblongata controls consciousness and arousal (the reticular formation) and its three vital reflex centers control the blood vessels diameter, heartbeat and breathing rate (the involuntary actions). This makes option D correct.
