 Dear students, in this module, we shall discuss the structural features of neuron. A neuron has three basic components. The first is a cell body, which is also known as soma. The second component is the dendrites and the third component of a neuron is the axon. We shall discuss these parts in detail. The cell body are soma, varies in size and shape in different neurons. It may be fusiform, are stelaet, are oval and may be rounded in some neurons. Some neurons also have pyramidal shaped cell bodies. The size range of cell body is from 5 µm in small neurons up to 135 µm in larger neurons. The cell body is the main nutritional part of the nerve cell. It is responsible for the synthesis of materials which are necessary for the growth and maintenance of metabolic functions of the nerve cell. The cell body, or soma, has an almost typical eukaryotic cell-like structure. It has a nucleus, it contains all the cell organelles. In addition to these, there are some specific structures which are called niscells granules and neurofibrils in a cell body. The niscells bodies are a group of ribosomes and endoplasmic reticulum which are involved in the synthesis of proteins. The neurofibrils are delicate threads which run from the cell body to the egg zones and to the dendrites. Neurofibrils' work is to provide support and shape to the cell body. In addition to this, these cell bodies transport substances from both extremities, dendrites or egg zones. Dear students, the dendrites are short, thin and branched cytoplasmic processes. They extend from the cell body and receive signals from other neurons. And after receiving these signals, they send these signals to the cell body. Dendrite colorfuls, Greek word dendron, which means tree, because these dendrites are very much branched, that is why they are called these. Highly branched dendritic tree-like nerve cells have one example in the brain of cerebellum purkinje cells. Dear students, now we shall discuss the axonal part of the neuron. The egg zones are long and thin processes that extend from the cell body. They have a constant diameter. The axones are specialized to conduct signals away from the cell body. They carry information for long distances with high fidelity and without loss. The structure of egg zone has a cytoplasm-like material in it that is jelly-like semi-fluid and is known as exo-plasm. Similarly, the plasma membrane of the egg zone is known as exo-lima. Exo-limas also have mitochondria and endoplasmic reticulum, but they lack niscells bodies. Dear students, the egg zones end at branched terminals. These terminals have small extensions which are called telodendria. These telodendria have nob-like structures which are called terminal knobs. Terminal knobs are the places from where neurotransmitters are raised. Long terminals allow the transmission of signals to other neurons or to the glands or to the muscle fibres to which the neuron is attached. Now we shall discuss another part of the neuron. That is the egg zone hellock. Egg zone hellock is present at the junction of cell body and egg zone. It is a conical-shaped region. It is the place where action potentials and signals are generated which travel in the whole egg zone. Dear students, on some egg zones there is a fatty-material layer which is called myelin sheath. These myelin sheaths are not continuous, but it has small, non-myelinated points which are called nodes of renvier. Due to these nodes of renvier, nerve impulse moves in a jumping pattern from one node to the other. Such conduction of impulse is called saltatory conduction. Such impulses are called saltatory impulses. This pattern found in myelinated neurons increases the speed of nerve impulse.