Discussion
Which part of the human brain controls the involuntary actions like salivation and vomiting ?
Answer: C
Involuntary actions such as salivation and vomiting are controlled by the medulla in the hind-brain.
The medulla oblongata, at the base of the brain where it joins the spinal cord, contains centres for vital involuntary actions: heartbeat, breathing and blood pressure, and reflexes such as salivation, vomiting, swallowing, coughing and sneezing.
The fore-brain (cerebrum) handles thinking and voluntary actions, the mid-brain relays visual and auditory reflexes, and the cerebellum, also in the hind-brain, maintains posture, balance and the precision of voluntary movements. None of these controls salivation or vomiting.
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