Q.

Involuntary actions in the body are controlled by:

1 Medulla in fore brain  
2 Medulla in mid brain  
3 Medulla in hind brain  
4 Medulla in spinal cord  

Ans.

(3)

The involuntary activities are controlled by the medulla oblongata in the hind brain. Involuntary movements have a slower speed than voluntary movements. The beating of the human heart is the best example of this.