Firstly tell about what is neuron 
Neuron : neuron is a building block of neural system.and it transmits information through electrical and chemical signals. 
Neurons are cells within the nervous system that transmit information to other nerve cells, muscle, or gland cells. Most neurons have a cell body, an axon, and dendrites. The cell body contains the nucleus and cytoplasm. The axon extends from the cell body and often gives rise to many smaller branches before ending at nerve terminals. Dendrites extend from the neuron cell body and receive messages from other neurons. Synapses are the contact points where one neuron communicates with another. The dendrites are covered with synapses formed by the ends of axons from other neurons.
2nd tell about the :-
Parts of neuron :- 1.Dendrite 2. Nucleus 3.Soma 4.Axon 5.myelin sheet 6.node of ranvier 7.Schwann cell 8.Axon Terminal
3rd about the :- 
Funtions of neuron :-  Located within the Central Nervous System (CNS), relay  neuron  transmit the electrical impulses generated by the stimuli to other nerves. Schwann cells are the cells that lay down the protective myelin sheath around the axon of medullated nerve fibers.
 hope that all these points helps u to perform your presentation well. :)