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The Autonomic Nervous System

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The Autonomic Nervous System

The autonomic nervous system is quite possibly one of the most important parts of the human body it is essential for our survival and in charge of our involuntary nervous system that flows throughout our bodies. The autonomic nervous system interacts with nearly every process in the body and can interact with organs in our body to help maintain homeostasis as well as having control of our digesting and rest cycles. One of its main functions is also to control the muscles of the internal organs. Although the autonomic nervous system does everything involuntarily we can train our bodies to change certain things forcefully, for example, you can hold your breath for a while and stop your body from taking in any oxygen …show more content…

The sympathetic nervous system can respond to stressful situations such as fear, cold, exercise, trauma, and hypoglycemia. The sympathetic division of the autonomic nervous system works by increasing the heart rate and blood pressure by activating the energy that is otherwise stored in the body. The sympathetic division is also known by another popular name which is the fight or flight mode (sympathy-adrenal response) and the reason why they named it this is because when the body experiences stressful situation it triggers sympathetic activation in the adrenal medulla which causes it to release epinephrine and lesser amounts of norepinephrine. These hormones that are released make their way directly into the bloodstream and promote the response that affects the target organ. The sympathetic nervous system acts as an entire unit meaning that it will discharge as a whole …show more content…

In your heart when it experiences extraneous circumstances it can increase the heart rate or force a contraction to cope with the increases in physical activity. In the lungs, one can experience dilated bronchioles by circulating the adrenaline that is produced. In the kidney you will see an increase in renin secretion, the gut will also decrease peristalsis and tone while also contracting the sphincter. The salivary glands will thicken up and produce a viscous secretion. One other thing that the sympathetic nervous system will slow down and relax the bladder when it is experiencing pressure or concentrate the sphincter to help control the

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For example, for a voluntary reaction the body must listen to the sound so the brain has to process the sound then is signaled to kick. For an involuntary reaction, the process is faster because its automatic and the brain doesn’t have to process the signals. 2. Suggest two ways that relax reactions help maintain homeostasis in the human body. When we relax, we maintain steady breathing levels so relax reactions help maintain homeostasis in the human body by maintaining steady

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The functions of the human cardiopulmonary system can be broken down into two, circulatory system and the respiratory system. The main goal of these two systems is to maintain homeostasis in our body. Homeostasis can be described as a type of condition where the internal continuity of an individual has to keep steadiness, regardless of any external changes from the outside environment. External changes from the outside environment may include factors such as excitement, stress, exercise, diet, and much more. Exercise can be carried out because the human body can endure a high level of exercise during a prolonged period of time.

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Often called the fight or flight reflex, stress has been known to save people’s lives, whether it be on a battlefield or some dangerous situation back home. Too much stress ultimately leads to health problems, but too little stress isn’t good for us either. When we go too long without a sharp stimulating response, the body loses its ability to handle stress properly (Tom Scheve, 2009). Somewhere between too much, and too little stress can actually be good for you, helping you perform under pressure. It is when someone cannot turn off that fight or flight feeling that it begins to show its negative effects.

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Question 1 - The Pathophysiology Explain the pathophysiology of Mr Jensen’s post-operative hypovolemia and how some of his post-operative assessment data might have contributed to this. In addition explain how the body might compensate for this physiologically (approximately 800 words). (997 Words) Mr George Jensen is a 65-year old male who was brought into Emergency Department with an open fracture of his right tibia and fibula after falling from his roof. Taken to theatre as an emergency case, Mr Jensen had an open reduction and external fixation of his fractures.

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The two branches of the ANS system are SNS which stands for sympathetic nervous system and the PNS which stands for parasympathetic nervous system. The SNS triggers the “fight or flight” response, it originated in the spinal cord. SNS prepares the body to put our energy and to protect it from effects of injury. SNS shuts the gut down, speeds up the heart, increases blood pressure, dilates pupils, makes more glucose available in the blood for energy. PNS is sometimes referred to as the “rest and digest” system.

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Thus, the sympathetic nervous system increases heart rate, and the forced contractions widen the airways making it easier to breathe. Your body now releases stored energy, which allows for increased strength in muscles, and can also cause your palms to sweat, pupils to dilate, and hair to stand up. The parasympathetic division is most active during resting conditions, hence, why it can also be called, “rest and digest”. This division controls body processes during ordinary situations. It generally slows down your heart rate and decreases your blood

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A great deal of forgetting happened within the first three chapters of Nervous Conditions, and so little people in the family were upset by it other than Tambudzai. Some of Tambudzai's family members left her to seek a higher education. These people included her brother, Nhambo, her Uncle, Babamukuru and therefore her cousins Nyasha and Chido. Tambu was not concerned when her brother left to go to the mission to receive his education, although she was slightly jealous as a person should be. The leaving of her cousins and her uncle brought on more sorrow than with her brother leaving.

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The hindbrain is one of the major regions of our brains, it is located at the lower back part of the brain. The hindbrain is responsible for our autonomic functions such as heart rate, blood pressure and breathing, it is mainly controlled by the nuclei in the hindbrain, particularly in an area called the medulla oblongata ( Bernstein, 2016, pg.59). There are three part in the hindbrain known as the medulla, the reticular and the cerebellum. The hindbrain controls all the things that you want to automatically work without having to think about them. Can you imagine having to remind your heart to beat or consciously adjust your sense of balance?

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Stress is a natural human response that prompts us to address problems and situations. When under stress, your hormones are released and your body goes into a fight or flight response. You begin to sweat more, your heart rate and blood pressure increase, and your muscles tense. This is why stress is so detrimental to our health. Especially for African Americans, who are already at high risk for high blood pressure given that it's part of genetics.

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The heart may have the sinoatrial node (SA node) to trigger contraction, but in order for us to breath our nervous system has to signal for us to begin the process of ventilation (breathing). Our brain stem has three parts to it, but only the pons and medulla oblongata play a key role in breathing. The medulla helps set the respiratory rhythm by receiving and sending impulses to a bundle of neurons called the ventral respiratory group to the phrenic nerve to bring about contraction in the diaphragm and external intercostal muscles. All this only happens though due to the sensors of the chemoreceptors. The chemoreceptors located in the medulla and carotid and aortic bodies detect a rise in carbon dioxide (CO2).

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1.0 INTRODUCTION Anxiety is about your body's method for reacting to any sort of risk or request. At the point when your body feel undermined, then your sensory system will reacts by discharging a surge of anxiety hormones, including cortisol and adrenaline, which awaken the body for crisis activity. Your heart will pound quicker than some time recently, your circulatory strain begin rises, your muscles get to be fix, your breath gets to be stimulates and in conclusion your faculties turn out to be more keen. These physical changes increment your quality and stamina, improve your center and speed your response time. "

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The muscular system is very important for everyday life. Without it we wouldn't be able to carry out everyday tasks such as writing this paper or tying our shoes or anything. This system also helps us distribute wastes when our body doesn’t need them anymore, which is important because if the wastes build up the toxins will enter your system the wrong way and it will harm you eventuly. This system interacts with the many other systems but the main two are the nervous system and the digestive system. The nervous system is what controls the brain and the brain tells us to move certain parts of our bodies without us knowing it, this is how our involuntary muscles move.

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Nervous Conditions is a partially autobiographical novel by Zimbabwean author Tsitsi Dangarembga that takes place in Rhodesia in the late 1960s and early 1970s. It focuses on the themes of race, class, and gender through the eyes of Tambu, the young female protagonist. The title references Jean Paul Sartre 's introduction to Frantz Fanon 's 1963 book The Wretched of the Earth, in which he writes, "the status of 'native ' is a nervous condition introduced and maintained by the settler among the colonized people with their consent. " Dangarembga expands Fanon 's exploration of African people oppressed by a colonial regime by incorporating the gender-specific role of black women, who are arguably doubly oppressed. The women in Dangarembga 's novel grapple with "nervous conditions" borne from years of colonialism as well as the continued oppression under the Shona power system.

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INTRODUCTION Stress is a word derived from Latin word “Stingere” meaning to draw tight. (Mojoyinola, 2008) Stress is your body’s way of responding to any kind of demand or threat. When you feel threatened, your nervous system responds by releasing a flood of stress hormones, and including adrenaline and cortisol, which rouse the body for emergency action. Your heart pounds faster, muscles tighten, blood pressure rises, breath quickens, and your senses become sharper. These physical changes increase your strength and stamina, speed your reaction time, and enhance your focus.

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