The nervous system is formed of nerve cells, neurons, which are surrounded by neuroglia, a tender network of connective tissue. Neurons are the distinct units of nervous tissue and are of ectodermal origin. Structure of Neuron: A neuron has a cell body or cyton from which arise two types of fibres. (i) Cyton: A cyton has a nucleus and numerous [...]
Read this article in Hindi to learn about the various parts of nervous system in humans. तन्त्रिका तंत्र के मुख्य कार्य: 1. शरीर के सभी तंत्रों का नियंत्रण जिससे उनके कार्य मिलजुल कर तथा उपयुक्त ढंग से चल सकें । 2. भिन्न संवेदनाओं का अनुभव 3. हायर फन्कसन जैसे बातचीत, सोचना, सीखना, याद करना तथा अन्य स्किलफुल कार्य । समझने [...]
The central nervous system is composed of the brain and the spinal cord. Impulses are transmitted to the central nervous system through afferent (sensory) fibres of the peripheral nerves. The brain interpretes the messages and despatch them to the effectors through efferent (motor) neurons. Brain: In the embryo, the brain is formed by the dilation of the neural tube, at [...]