Miracle of the Nervous System

The nervous system is one of the most complex systems in the human body. The system monitors and controls all the activities and functions of every cell, tissue, and organ in the body. The realization of our existence and life on this earthly plane depends on the nervous system. It controls our personality, senses, thoughts, intelligence, memory and understanding, basic body functions, and how we relate with other human beings. According to Life Scientists and Medical Doctors, the nervous system is composed of the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS consists of the brain and spinal cord, while the PNS consists of a network of nerves that transverses all cells, tissues and organs of the body. The nervous system serves as the decision and communication center of the human body; the brain serves as the control room of the human system, while the spinal cord functions like a superhighway, instantly conveying messages to and from the brain. God in His wonderful design protects both the brain and the spinal cord with bones. The skull protects the brain and the vertebra protects the spinal cord. The basic functioning of the nervous system depends on nerve cells also called neurons. Bundled together in a network of thin threads, nerve cells carry messages back and forth just like telephone wires. All human senses and activities such as seeing, hearing, smelling, tasting, thinking, remembering, memorizing, dreaming, breathing, heart beating, moving, running, sleeping, laughing, singing, feeling pain or pleasure, studying, or writing depend mainly on the nervous system. Information from the environment are gathered by sensory neurons and sent to the spinal cord which speedily amplifies the messages and relay them to the brain. The brain sensitizes the messages and fires off a response to motor neurons. The motor neurons deliver instructions from the brain to the rest of the body. Thus, when a message comes into the brain from anywhere in the body, the brain tells the body how to react. For example, if you accidentally touch the side of a hot oven, the nerves in the skin of your fingers sends an instant message of pain to your brain. The brain instantly responds with a counter message telling the muscles in your hand to pull away. Thanks to the marvels of electricity and chemistry that enable all neurons to instantly convey messages to and from the brain and to each other through complex electrochemical processes. Neurons generate electrical pulses when stimulated by vibrations such as heat, cold, light, sound, touch, or sound. The generated electricity triggers the release of chemicals that convey the pulse to the next neuron. This process which proceeds from one neuron to the other allows the brain to monitor and regulate the involuntary or unconscious body processes, such as digestion and breathing and to coordinate the conscious and/or voluntary movements of your body. The brain is also the site of our consciousness, allowing us to think, learn, imagine, and create. No doubt, the functions of the brain are very miraculous and cannot be fully comprehended by human beings.