Reflection Of The Nervous System

For my project, I will be covering the nervous system. Some processes I will cover will be brain function in relation to nerves, and how age changes this. varies as people pass from childhood through adulthood to old age. From young age to adulthood, there is a spike in brain function, it steadies in adulthood, and then declines in old age, but different aspects of the brain change at different times. Since the nervous system is controlled by the brain, it is affected drastically. Some specific parts of the nervous system that I will explain will be the autonomic nervous system(made up of the sympathetic nervous system and the parasympathetic nervous system), and the enteric nervous system. I will go in depth into what makes these things work, by explaining the neuron-(I

The way that neurons send information through one another is with chemicals called neurotransmitters. They carry these messages through axons, the threadlike parts of a nerve cell in which impulses are conducted. These nerve cells are so conductive because of a covering called myelin. The space between each nerve is a synapse. The transmitters send the messages across it to get from point to point. All neurons receive messages through dendrites, branched structures that protrude from the cell body. Dendrites are shorter and have more branches than axons. The brain is a control freak, and only lets neurons release neurotransmitters when a cell sends an electrical signals to its axon. Other examples of the perfection of the nervous system is that dendrites are coated with sorts of different receptors, which are specific to certain types of neurotransmitters. For instance, dopamine can’t bind to anything but a dopamine receptor, although some receptors pass on an electrical signal from cell to cell through ionic