The Nervous Systems Essay

In all types of organ systems, the nervous system is one of the most important systems of the human body. James W. Pennebaker (2012) is responsible for creating, controlling and leading our way of thinking and reactions to the world around us. During embryonic development, cells forming the nervous system are much more specialized and more complex than cells forming the skin or other body parts. Neurosecretory cells are examples of special neurons that cause neurosecretion. Nerve secretion is a hormone that conveys information from sensor cells to target cells. Target cells are directly released into the blood.

Each individual nerve consists of afferent and efferent nerves, afferent nerves transfer impulses from different parts of the body to the nervous system, efferent nerves transmit impulses from the nervous system to different parts of the body . Autonomic nervous system is another type of PNS that causes unwilling behavior such as heart, lungs.

The nervous system consists of basic units called neurons. The main role of neurons is to receive, integrate and communicate information in the body. Several glia cells are also found in the nervous system and support neurons by providing protection and nutrition. Neurons have neurites that look like finger-like protrusions that protrude from the nerve cell's body. They also include axons and dendrites that allow signals to be transmitted throughout the body. Normally, according to Regina Bailey (2013), axons carry signals away from the cell body and dendrites transmit signals to the cell body. Neurons have three different forms of bipolar, unipolar, and multipolar, Bipolar has two neurites originating from the cell body, and from the cell body to the unipolar there is only one neurite. Come out from the cell body

There are two types of nervous system: central nervous system and peripheral nervous system. They are responsible for integrating, processing and adjusting central nervous system sensory data and motor commands that convey information to interpret sensory inputs and maintain homeostasis. Because the central nervous system consists of the spinal cord, the central nervous system can not regenerate. In other words, if the central nervous system breaks, the spinal cord will also be broken. - The structure and function of the autonomic nervous system: Our body organs are controlled by many systems to function properly and efficiently to survive in the environment in which we live. These include the heart, stomach, intestine, other important organs, and the body system. All systems in our bodies are regulated by a part of the nervous system called the autonomic nervous system (ANS).

The nervous system is involved in neural coordination. The nervous system is divided into the central nervous system (CNS) and the peripheral nervous system (PNS). The central nervous system occupies most of the nervous system including the brain and spinal cord and plays an important role in controlling behavior along with the peripheral nervous system (PNS). The nervous system communicates with several other body systems. Example: Even if we have not started eating yet, our brain will begin to convey our digestive organs, pancreas and stomach through the nerve expected to enter the food. Due to this stimulation, the pancreas stimulated by the neural signal shows a total secretion of about 20%. Skeletal muscle also requires neural input to initiate contraction