Nervous System Synthesis Essay

The nervous system consists of the brain, spinal cord, and a complex network of neurons. This system is responsible for sending, receiving, and interpreting information from all parts of the body. The nervous system monitors and coordinates internal organ function and responds to changes in the external environment. This system can be divided into two parts: the central nervous system and the peripheral nervous system. Let 's take a look at the central nervous system.

The nervous system is made up of basic units called neurons. The main role of the neurons is to receive, integrate and transmit information throughout the body. There are some neuroglial cells found in nervous system aswell which provide support to the neurons by giving protection and nourishment Neurons have nerve processes that looks like finger like projections extended from the nerve cell body. They also contain axons and dendrites which enable them to transmit signals throughout the body. Normally, axon carry signals away from the cell body and dendrites carry signals toward the cell body according to Regina Bailey (2013). Neurons have three different shapes: bipolar, unipolar and multipolar where bipolar has two neuronal processes coming out of the cell body, unipolar has only one neuronal process coming out of the cell body and multipolar has many neuronal processes coming out of the cell body.

The nervous system is made up of 2 main parts - the spinal cord and the brain. These two parts combine to make the central nervous system and the sensory and motor nerves which form the peripheral nervous system. Neurons process information in the form of electrical signals, namely nerve impulses, which travel along the axon. Charged ions are not able to enter plasma membranes which make neurons have a difference in ion concentration between the inside and the outside of a neuron. This prevents the passive diffusion of Potassium and Sodium ions from areas of high concentration to areas of low concentration. Proteins which act as ion channels and ion pumps are attached to plasma membranes. This allows the ions to be transported across

The nervous system is a chain of interconnected nerve fibers which is constructed by the central nervous system and Peripheral nervous system. The job of the nervous system is to send messages from the brain and spinal cord to different parts of the body.

Our nervous system is there to help to transfer the things our body feels and what we need. The nervous is broken up into two parts, the central nervous system (CNS), and the peripheral nervous system (PNS). The CNS controls the brain and the spinal cord, the PNS controls the nerves and the ganglia (a small mass of gray matter). Our body uses the spinal cord to send messages to the nerves so that it can control our organs and muscles.

The nervous system is composed of two separate systems: the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS includes the brain and spinal cord while the PNS consists of the nerves that are outside of the brain and spinal cord. The brain receives information sent from the PNS via neurons. The CNS contains neurons which are the basic units of the nervous system. There are three different classifications of neurons: motor, sensory, and interneurons. The motor neurons transfer signals from the central nervous system to the muscles to help with movements. Sensory neurons transfer information to the central nervous system from external stimuli such as environmental factors. The interneurons transfer signals between the motor and sensory neurons. If a person is diagnosed with Parkinson’s the neurons that receive the information begin to fail and eventually die. A person that does not have sufficient amount of neurons is not able to receive dopamine and begin to lose coordination thus limiting their movement.

Every behavior begins with biology. Our behaviors, as well as our thoughts and feelings, are produced by the actions of our brains, nerves, muscles, and glands. In this chapter we will begin our journey into the world of psychology by considering the biological makeup of the human being, including the most remarkable of human organs—the brain. We’ll consider the structure of the brain and also the methods that psychologists use to study the brain and to understand how it works.

The nervous system is in charge of carrying signals from the fingers to the brain, processing information, and sending signals back from the brain to the fingers. The nervous system’s afferent nerves carry signals from the peripheral nervous system to the central nervous system, neural integration is carried out by interneurons, and efferent neurons send signals back from the central nervous system to the peripheral nervous system. Neurons conduct messages in the form of nerve impulses. They have dendrites to

The way a signal starts in the motor neuron is by way of a stimulus activating sensory neurons. This signal travels by way of the axon that contains schwann cells. The signal continues to move into the CNS, which causes signal to be sent to interneurons. The interneurons can send the signal through the peripheral system or to the brain via the spinal cord.

The way we think, process, and function is conducted through our nervous system. It is composed of nerve cells called neurons. The brain has 100 billion neurons. They receive an electrical impulse that excites one neuron cell and starts a chain reaction from one to the next and initiates an action. A neuron is composed of a cell body, and has dendrites and an axon. Dendrites are thin tendrils that stretch from the neuron to receive the electrical signal. It passes then on through the cell body to the axon, a long thin strand, that passes it on to the next neuron. Neurons do not touch each other. The junction between neurons is called a synapse. They pass on messages through chemicals called neurotransmitters that jump from the axon and bind to a receptor site on the next neuron’s dendrites across a gap called the synaptic cleft.

The nervous system is made up of three vital parts; the brain, spinal cord and nerves. This system controls everything we do from breathing, to running to making our heartbeat fast or slow. The nervous system is very complicated although it can be broken down into smaller components.

There are two types of nervous system cells, they receive and send electrochemical responses to the body. Neuron cells are the conducting cells of the nervous system. Neurons have a cell body with dendrites branching from the main body, an axon which is the long tail that extends from the main body that is wrapped in myelin to create a protective sheath around the axon that also helps speed the neurotransmissions. The glial cell is the supporting cells of the

The brain is a unique organ, it allows us as humans, for example to imagine, speak and perform a lot more complex functions. To function well as a complex organ, the brain has a lot of cells. The brain consists of neurones and glia cells. Neurones observe changes from the environment, communicate these changes to other neurones and issue commands to the body to react on these changes. Glia cells give the neurones among other things protection and support. Neurones are really small cells composed of two parts: the soma, which contain the cell nucleus and neurites, which are projections from the soma. There are two different types of neurites, the axon and the dendrite. Dendrites receive signals to transfer to the neurones and axons carry the output of the neurones. Figure 1 gives a schematic overview of a neuron and shows the dendrites, cell body and axon. This essay will discuss the structure of neurones and the different types of neurones further in detail. It will start with the structure of a typical structure of a neuron and then the different types of neurones, the sensory-, motor- and interneurones. (Bear, M.F. et al. (2007))

The CNS contains the brain and spinal cord. Its main functions include: processing, integrating, and coordinating sensory information and motor instructions. The sensory data conducts information that is being processed from internal and external conditions the body is experiencing. Motor commands regulate and control peripheral organs (skeletal muscles). The brain functions under memory, emotions, learning, and intelligence. The PNS consist of the neural tissue found outside of the CNS. It functions in sending data to the CNS which motor commands are than carried out to the peripheral tissues/systems. Multiple nerve fibers send sensory data and motor commands in the PNS. The nerves that assist with transmitting data include the cranial nerves and spinal nerve. However, the PNS can be divided into afferent (to bring in) and efferent (to bring out) divisions of transferring data. The afferent division functions in bringing in sensory data to the CNS. Sensory structures are receptors that detect internal/external environmental change and adjusting accordingly. The efferent division functions in carrying out motor commands from the CNS to glands, muscles, and adipose tissue. The efferent division contains somatic

They receive information and send signals to other neurons, muscles, or glands by using electrical signals called nerve impulses. When a nerve impulse reaches the end of a neuron, it triggers the release of a chemical, or neurotransmitter. The neurotransmitter travels rapidly across the short gap between cells (synapse) and acts to signal the adjacent cell. First, the neuron receives information from the external environment, or from other neurons. Then, it integrates, or processes, the information from all of its inputs and determines whether or not to send an output signal. Next, it sends the signal along its length at full speed. The distance may be up to several meters (a giraffe or whale, for instance) with rates up to 328 feet per second. Finally, the neuron converts the electrical signal to a chemical one and transmits it to another neuron or an effecter, such as a muscle or gland. “Neurons have many different shapes and sizes. However, a typical neuron in a vertebrate (such as a human) consists of four major regions: a cell body, dendrites, and axon, and synaptic terminals” (Biology). A single neuron can have up to 10,000 dendrites connecting to other