Ans System Essay, Research Paper
DESCRIBE THE STRUCTURE OF THE ANS SYSTEM AND DISCUSS THE EFFECTS IT HAS SHOWN TO HAVE ON PHSIOLOGICAL AND BEHAVIOURAL FUNCTIONS?
The ANS is a purely motor system, meaning that it transmits impulses out of the CNS to various motor or effect or organs of the body. These include the smooth muscle of the blood vessels and the gastro intestinal system, heart muscle, and several glands such as the pancreas, the adrenal medulla and the salivary glands. The ANS first function is to regulate internal bodily processes. It does this by sending information to and from the CNS. Although the ANS is very important it is the CNS that is in control.
The ANS operates as an independent or autonomous control system. Although we learn as we mature in age to control our autonomic functions, such as urination and defecation, these would occur in the absence of control of them. These bodily processes and many others are controlled by the ANS without requiring conscious effort. To enable the ANS to perform its functions it has two branches. The sympathetic branch that produces a pattern of arousal in the body, with heart rate and blood pressure increased, adrenaline released and from the adrenal gland. The parasympathetic branch run to the same organs, but their activation leads to opposite effects. Heart rate and blood pressure are reduced, adrenaline secretion falls, and digestive activity increases.
The sympathetic branch or ganglia of neurons comprising the sympathetic branch are interconnected so that they form a long chain on each side of the spinal cord. The sympathetic branch originates in the two middle portions of the spinal cord; the interconnections between the neurons allow the sympathetic branch to act as a unit. It is important because the sympathetic branch prepares the body to extend energy. As well as the effects show in the diagram below
It also increases blood pressure, releases sugar from the liver into the blood and increases the blood flow to the muscles used in physical action. Further, it tells the endocrine system to release hormones into the bloodstream to strengthen these responses.
Walter Cannon 1972 suggested that the major function of the sympathetic branch was to mobilise the body of an emergency, he called this the fight – or –flight response since physiological changes that occur are designed to help us defend ourselves or flee from a threatening situation.
The parasympathetic ganglia are much more widely distributed than the sympathetic branch ganglia. Drawn in the diagram previously, the nerve fibres originate at either end of the spinal cord, near the organs they affect. However, because the fibres are less interconnected than those of the sympathetic branch, the parasympathetic branch acts less as a unit and more on individual organs. The diagram previously shows that the parasympathetic branch operates in the opposite direction to the sympathetic branch and stimulates processes that serve to restore or conserve energy. The parasympathetic also carries out the bodies “maintenance needs”. As well as digestion it provides for the exclusion of waste products and directs tissue repairs. Parasympathetic activity is mostly in the use when we are relaxed or inactive. There is a balance between the two branches of the ANS; therefore our internal environment is kept balanced.
One of the glands affected by the ANS is the adrenal medulla. When stimulated, the medulla releases two closely related hormones into the bloodstream – adrenaline and nor adrenaline. These are carried around the body where they act as sympathomimetics, meaning their actions are similar to the sympathetic branch of the ANS. The adrenaline and the nor adrenaline can be seen as part of the ANS, as nor adrenaline is the synaptic transmitter at the synapses between the ANS sympathetic neurons and their target structures.
A key feature of the ANS is that this regulation of our internal physiological systems, or metabolism is largely automatic and proceeds outside our conscious awareness. The ANS also has an important role in the form of homeostasis that is the maintenance of a constant internal environment. E.g. the control of our body temperature.
Bibliography
ccm
gross
Другие работы по теме:
Pictograph Essay Research Paper In the ancient
Pictograph Essay, Research Paper In the ancient times (4000-30B.C.) the Egyptian Pharaohs were the most powerful people on the planet. They had sophisticated methods for building and irrigation. In one area that they lagged in sophistication was the basic form they used for writing their language. The ancient Egyptians used hieroglyphics that was often expressed through pictographs that are stylized pictures used to express words and subjects.
Press Censorship Essay Research Paper There are
Press Censorship Essay, Research Paper There are many kinds of censorship within our school system. Such as press Censorship, we aren’t aloud to express freely among our school?s newspaper nor
Elmer Kelton Essay Research Paper In Elmer
Elmer Kelton Essay, Research Paper In Elmer Keltons “Politically Correct or Historically Correct” he mentions about the way people see and describe historical events. Some people can describe
Muscular System Essay Research Paper Do you
Muscular System Essay, Research Paper Do you think muscles are important? Do you have an idea of what they are made of? Well, here is some food for thought: your muscles make up forty percent of your body weight. If you like that interesting fact maybe you’ll learn some more.
Alarms Essay Research Paper Alarm Systems You
Alarms Essay, Research Paper Alarm Systems: You Need One All homeowners should have an alarm system in their home. Alarm systems can help you in times of distress. They can even save your life and keep your belongings from getting stolen. I think that all homeowners should have and alarm system for their safety and the safety of their belongings.
Always And Forever Essay Research Paper When
Always And Forever Essay, Research Paper When nothing makes sense and every thought is blurred, Love finds it’s way and somehow I understand. I know why it is and what must be,
The Four Lobes Essay Research Paper Assignment
The Four Lobes Essay, Research Paper Assignment #3: Essay #4 4. Describe the four major lobes of the brain (name and location) and describe what abilities one would lose if damage occurs in each of the lobes.
Binary Systems Essay Research Paper Binary systems
Binary Systems Essay, Research Paper Binary systems are a major factor of everyday live. As years pass the use of a binary system has changed dramatically. Throughout this essay I will explain what binary systems are, how they were used in the past, and how they are being used today. A binary system is defined as a numbering system with a base (radix) of 2, unlike the number system which has bases of 10.
Capitalism And Communism Essay Research Paper Capitalism
Capitalism And Communism Essay, Research Paper Capitalism and Communism are two totally different economic systems. Capitalism is a much better economic system than Communism. Capitalism is an economic system characterized by freedom of the market and is the economic system where you do not have freedom because the government will make most of your decisions for you.
The Immune System Essay Research Paper The
The Immune System Essay, Research Paper The immune system is a group of cells and organs that defend the body against invaders causing disease. The immune system is made up of mostly
Electric Belief System Essay Research Paper The
Electric Belief System Essay, Research Paper The use of eclectic belief systems is the ultimate realization of personal destiny. It is a set of beliefs and practices that have been tailored to the needs of the individual, not of the populus, or the governing geographical authority. It represents an active, positive role of the individual in the direction of his or her life.
Criminal Justice Essay Research Paper In this
Criminal Justice Essay, Research Paper In this paper I will attempt to explain how the United States Criminal Justice System and Ireland has some different characteristics. They both share some of the same practices in each system. I will give a brief history of both countries and the way their system works.
Hegel Essay Research Paper Georg Wihelm Friedrich
Hegel Essay, Research Paper Georg Wihelm Friedrich Hegel 1770- 1831 German Idealist Hegel was born in Stuttgart on August 27, 1770, which is now part of Germany. Hegel was the son of a revenue officer with the civil service. He studied the Greek and Roman classics while attending the Stuttgart preparatory school.
Facism Essay Research Paper Throughout time the
Facism Essay, Research Paper Throughout time the debate upon which is the best system of government has been ongoing. Somewhere between the realms of democracy, socialism, fascism, communism, and monarchism lies the answer to the perfect system. Traditionally speaking, North America has always tried to remain democratic.
Nervous System Adaptation Essay Research Paper Nervous
Nervous System Adaptation Essay, Research Paper Nervous System Adaptation plays a significant role in exercise development as seen by mental imagery, cross education, and coactivation. The body must establish and modify it?s own neural network before it can strengthen. A weight lifter can improve his workouts by understanding the fundamentals of NSA.
Functional Education System Essay Research Paper Sam
Functional Education System Essay, Research Paper Sam Bertolami British Literature 4th Period 8-10-00 When I accepted the position of Secretary of Education I was asked to design and create an education system that is works. Unfortunately it is my belief that no one person can create a fully functional system of education.
Police Academy Essay Research Paper Police Academy
Police Academy Essay, Research Paper Police Academy: Mission to Moscow (1994) 1/2 This movie succeeds on only one mission — the mission to suck. That’s the only way to describe the seventh Police Academy movie. It sucks, so much so that previous entries in the series look like classics in comparison. I can’t say I didn’t expect it to be this bad, because once I saw the copy on the back of the box that read, “Kicking butt-ski! Making you laugh-ski! The Academy is back-ski!” I knew it wouldn’t be up for any Oscars.
Poem How Much You Mean To Me
My Love Essay, Research Paper How much do you mean to me my love? The oceans and heavens could not contain my thoughts for you. If all the writers of the world sat down, they still could not describe your endless beauty.
Geographical Information System Essay Research Paper GIS
Geographical Information System Essay, Research Paper GIS Geographical Information System originated in the 1960s. During the early days of the technology the use was limited to a small group of practicioners. It is a information technology which analizes, stores, and displays both spatial and non-spatial data.
Metric System Essay Research Paper Metric SystemThe
Metric System Essay, Research Paper Metric System The Metric System, also known as the System Internationale (SI) was developed in France in 1799. The Metric System was created because the French and English were not in agreement politically, therefore the French did not want anything to do with the English including their system of measurements.
The Ideal Customer Essay Research Paper The
The Ideal Customer Essay, Research Paper The Ideal Customer Rarely is one asked to describe the ideal customer in any aspect not directly related to customer service. Therefore, I find this a refreshing and highly interesting project to stretch my imagination and experience dealing with the nature of most customers.
An Ideal Society Essay Research Paper An
An Ideal Society Essay, Research Paper An Ideal Society There is no real way to describe an ideal society many authors have tried to write what they believe it might be like, but by the end of every story the perfect society all most always fails . The only real way we could have a perfect society is if the people who made up the society were perfect.
Gps Essay Research Paper Describe how GPS
Gps Essay, Research Paper Describe how GPS works and how normal citizens have been able to use it to make their lives easier. GPS is a global positioning satellite that is used to show the exact position on earth that you are. This system is used in many ways. Many people in a new city use rental cars. These people will probably get lost.
Poem More Than You
’ll Ever Know Essay, Research Paper More Than You’ll Ever Know Words can’t express My feelings for you. I search for the right words, But none that I find will do.