The nervous system is composed of a network of neurons and glia cells that transmits data between the brain and spinal cord and other parts of your body. It performs two primary functions: sensory perception and motor control.
Stimulus-Response Mechanisms
The most common view of the nervous is that of a stimulus response associator. This means that an external stimuli such as light or noise causes neurons to send signals through a neural network to an affector (the location of the response). This conception is useful for explaining a wide range of behaviors.
Internally Generated Patterns of Activity
Neurons can also produce rhythmic patterns of electrical activity or action potentials. These sequences are generated by neurons in isolation. However, they are most powerful when they are connected through synapses. This allows neurons the ability to generate a wide range of dynamical behavior, including attractor, periodicity and chaos.
Neurons have a specific function that allows the nervous to function in its own way. They have long cellular processes known as axons, which can extend to distant areas of the body and form thousands of synaptic connections.
These long, thin axons transmit electrochemical signals rapidly. Sometimes they are covered by a membrane called the myelin. These signals travel along the axons in the form waves of electricity and are carried by chemicals called neurotransmitters. These chemicals release at synapses with other neurons. The neurons may be excited, inhibited or regulated.
Glia
The nervous system contains several specialized cells that provide structural and metabolic support for neurons. These cells are called neuroglia and are located throughout the body, forming part of the tissue that comprises the nervous system,, so if you have eney problem on your nervous system , you can reset your nervous system by Therapies to Reset Your Whole Body Nervous System.
They can also be involved in signal transmission, as they form a type synaptic connection with neurons. This allows them to receive messages from synapses. They can help maintain the homeostasis of the body, feed neurons, protect them from external stimuli, and destroy pathogens.
Glia have a crucial role to play in the development the nervous systems during embryogenesis. They serve as scaffolding for nerve cells and secrete the cerebrospinal to keep them hydrated.
The brains and spinal cords are protected against the external environment by a combination if physical and chemical barrier. These include the protective blood-brain wall, which keeps many chemicals out of the brain and spinal column, as well as the meningeal linings that surround the brain and cord.
There are also several other protective barriers, such as the insulating caps of the brain and spinal cord. These caps are located in different locations in the brain or spinal cord in order to protect them against the cold and heat from the environment.
The nervous system is divided into the somatic nervous system, which controls voluntary activities, and the autonomic nervous system, which regulates involuntary processes such as heart rate and breathing. The somatic nervous is composed of motor neurons and sensory cells. The autonomic nerve system includes the parasympathetic and sympathetic systems, which can either stimulate or suppress body functions based on the situation
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