Match the part of the neuron with its primary function.
| Column I | Column II |
|---|---|
| (a) Dendrites | (i) Forms the myelin sheath in the PNS |
| (b) Axon | (ii) Transmit impulses towards the cell body |
| (c) Schwann cells | (iii) Contain neurotransmitters |
| (d) Synaptic vesicle | (iv) Transmits impulses away from the cell body |