Get Full Essay Get access to this section to get all help you need with your essay and educational issues. The autonomic nervous system is essentially a motor coordination apprehensive with the management of visceral roles. It is in charge of largely smooth muscle and also cardiac muscle. It is an intuitive efferent structure, which means it drives motor impulses to the instinctive organs.
The term 'autos' means 'self' and 'nomos' means 'governing', so 'autonomic nervous system' means 'self governing nervous system'. The autonomic nervous system is that part of the peripheral nervous system which controls the activities of the organs inside our body automatically even without our thinking about them.
The autonomic nervous system is a specific network of nerves in the body which controls the processes like breathing, heart beat, digestion, sweating, etc. The nerves of the autonomic nervous system are attached to the smooth muscles of the various internal organs of the human body like head, heart, blood vessels, alimentary canal, lungs, kidneys, urinary bladder, glands and skin, etc.
Thus, the autonomic nervous system controls and regulates the functions of the internal organs of our body involuntarily on its own. Those actions which need thinking and which are performed by us knowingly are called voluntary actions.
For example, speaking to a friend, writing a letter, dancing, cycling, kicking a football, standing in a room or sitting on a chair, are all voluntary actions.
The voluntary nervous system helps us take voluntary actions which are under the conscious control of the brain. We will now give an example to understand the working of voluntary nervous system. Suppose we are walking down to school at a slow pace.
After covering some distance, we look at our watch and find that we are getting late. So, we start walking very fast. We can do this because of our voluntary nervous system as follows: This is an example of voluntary action and the decision to take this voluntary action has been made by the voluntary nervous system.
The central nervous system CNS consists of the brain and the spinal cord.
Like a telephone exchange with ingoing and outgoing wires, it is responsible for coordination and control of the activity of the nervous system. The work of central nervous system is to direct incoming messages to the motor neurons that are connected to the part of the body which will respond to a stimulus.
In complicated responses, the brain and spinal cord are both involved. That is, in complicated responses, central nervous system is involved.
The central nervous system enables a person to give a more appropriate and more intelligent response to various situations. By using the central nervous system, a person can vary his behaviour according to the changing situations.
This point will become clearer from the following example. If we pick up a very hot plate in the kitchen without knowing that it is very hotthen our reflex action produced by the spinal cord alone says that we should pull away our hand so that our hand is saved from burns.
But if we pull away our hand, then the plate would drop and break into pieces and our mother will definitely scold us for breaking the plate!
Now, it is here that the central nervous system involving brain steps in. When the message from our fingers saying that the 'plate is too hot' arrives at our central nervous system, there is already another message saying 'but don't drop it' This is due to the intelligence of the brain.
The central nervous system will consider the two messages together. It may then decide to send a message to our muscles to tell them to put down the plate gently and not drop it.
This intelligent response has been made possible only due to the central nervous system. The job of the central nervous system is to collect all the information from all the receptors in our body.
This information is added together before messages are sent out to the effectors. In this way, the best action can be taken in a particular set of circumstances. We will now describe the two organs of the central nervous system, brain and spinal cord in detail.
Brain is the highest coordinating centre in the body. The brain is located inside the skull of our body at the top of the spinal cord. It is protected by a bony box in the skull called cranium. The brain is surrounded by three membranes called meninges, which help to protect it. The space between the membranes or meninges is filled with a cerebro spinal fluid which protects the brain from mechanical shocks.
Pairs of cranial nerves arise from the brain.- The nervous system is divided into three components: the central nervous system, which encompasses the brain, brain stem, and the spinal cord, the peripheral nervous system, which includes the sensory receptors and effector muscles and organs in the body, and the autonomic nervous system which is part of both the peripheral and central.
Autonomic nervous system The autonomic nervous system (ANS or visceral nervous system) is the part of the peripheral nervous system that acts as a control system functioning largely below the level of consciousness, and controls visceral functions. The autonomic nervous system is that part of the peripheral nervous system which controls the activities of the organs inside our body automatically even without our thinking about them.
The autonomic nervous system is a specific network of nerves in the body which controls the processes like breathing, heart beat, digestion, sweating, etc.
As the Autonomic Nervous System is such an important part of the nervous system, studying it and knowing how it works, and how it is controlled, is also very important; in this essay I am going to talk about the three different branches of the Autonomic Nervous System and their functions and differences, and then explain how they are regulated in .
In conclusion, the Autonomic Nervous System is a diverse and widespread system that innervates nearly every aspect of the body, meaning that a threatening stimulus can elicit a whole range of responses throughout the body, from increasing heart rate to diverting blood from the gut and widening blood vessels, this means that the whole body is.
Autonomic nervous system The autonomic nervous system (ANS or visceral nervous system) is the part of the peripheral nervous system that acts as a control system functioning largely below the level of consciousness, and controls visceral functions.