The central nervous system coordinates the functioning of all parts of the human body and is the largest part of the nervous system. The human brain contains 86.1 billion neurons. Neurons are of different shapes and sizes and their complex interconnections add to the complexity of the nervous system. Interneurons act as the connectors between neurons. Motor neurons, on receiving signals from the central nervous system, bring about responses at the target organs. Sensory neurons respond to external stimuli that affect the sensory organ cells. Neuron can be considered as the basic unit of the nervous system, which processes and transmits information by means of electrochemical signals.
Let’s come to answer how the nervous system works. So here are some interesting facts about the nervous system. Before you proceed to understand the human nervous system function and parts, you might like to go through some human nervous system facts. The signals are transmitted in the form of electrochemical waves or chemicals. The nervous system is a network of special cells, neurons and ganglia, that work together to carry out the transmission and reception of signals between different parts of our body. Before going to the details of the structure and functioning of the human nervous system, you should know what the nervous system actually is and what it does. And it was when I first studied the diagram of a human heart, I realized that the heart is not exactly heart-shaped!Ĭoming back to the point, let me start explaining the human nervous system function and parts with the help of a labeled diagram. It was the skeletal system diagram that helped me understand the “skeleton” of human bodies. It was the labeled animal cell diagram that ‘magnified my image’ of the microscopic cell. For me, diagrams and illustrations that textbooks carried, were always of great help in understanding the topic. Reading this article will be like reading about the human nervous system from your science textbook as this article carries a labeled human nervous system diagram to help you understand its design and working. She was a person who looked at science through a philosopher’s eye. It was wonderful to pick up the intricacies of a seemingly boring subject like human anatomy from her. Look at the brain, for example man will never be able to replicate its intricate design or recreate intelligence and emotion”. She used to say, “The human body systems are the most accurately engineered machines that possess an intellect of their own. Studying human anatomy became interesting, thanks to her. The thought of diagrams brought back memories of school days the scent of those textbooks the sight of the classroom and my teacher’s voice that said, “C’mon class, open your science books, page 41, chapter 3, Human Body Systems”.
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