Correct the following statements by changing the first and the last word only :

1. Cerebrum maintains the balance of the body.
2. The long process which extends from the cell body of a neuron is termed as a dendron.
3. Enzymes regulate chemical coordination of the body.
4. Motor neurons carry impulses from the sense organs to the central nervous system.
5. Spinal cord regulates the heart beat and breathing movements.

Write one word in the space provided to complete the second pair of the related words pertaining to nervous system:

Memory : cerebrum :: breathing : ……………

Balance : cerebellum :: reasoning : ……………

Define the following terms :

1. Coordination
2. Neuron
3. Synapse
4. Brain
5. Spinal cord

Write one important role of the following :

1. Cerebellum
2. Medulla oblongata
3. Parasympathetic nervous system