The systems of the body. Systems are the most complex of the component units of the human body. A system is an organization of varying numbers and kinds of organs arranged so that together they can perform complex functions for the body. There are 10 systems in the body‚ but the 3 main are: • The nervous system • The respiratory system • The circulatory system The nervous system. The nervous system has two main parts: • The central nervous system – CNS; This is composed of the brain and the spinal
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58 60 67 68 72 80 81 83 86 These notes may be used freely by A level biology students and teachers‚ and they may be copied and edited. Please do not use these materials for commercial purposes. I would be interested to hear of any comments and corrections. Neil C Millar (nmillar@ntlworld.co.uk) Head of Biology‚ Heckmondwike Grammar School High Street‚ Heckmondwike‚ WF16 0AH July 2011 HGS Biology A-level notes NCM/7/11 AS Biology Unit 1 page 2 Biology Unit 1 Specification
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viruses that affect certain type of organisms. One of many different viruses that can affect different organisms is the virus called rabies. Since Rabies is spread through a virus‚ we will discuss how viruses work. With the many different types of viruses‚ there are different ways that viruses affect the body. Essentially most cells have both DNA and RNA. These are the building blocks of life. When cells split in half‚ the genetic material that is there is copied and then transferred to each call. As
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decrease in your blood sugar levels. You probably start to realize you haven’t consumed food in some time. Food plays a major function throughout our bodies on a daily basis. Our blood glucose levels are affected by the glycemic index ranked in foods. Foods high in carbohydrates are measured by how much it raises our blood glucose levels after being consumed. The glycemic index focuses on the quality‚ not quantity of the carbohydrates. Why is the glycemic index important‚ how is it measured‚ and
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Should The Government Regulate Our Health? Posted: 01/29/10 10:58 AM ET Get Healthy Living Alerts Sign Up Submit this story I was in my late 20’s when I walked into a dialysis clinic for the first time. The interior of the waiting area was worn‚ with beige paint peeling off of the walls. As I waited awkwardly to find out where my patient was my attention was drawn to a sign that read‚ "Did you know that [a popular fast food sandwich] contains 1020 milligrams of sodium?" Salt can be bad
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Assessing Blood Pressure Anatomy of the Heart The heart is located in the thoracic cavity between the lungs within the mediastinum. It is a hollow‚ cone-shaped‚ muscular organ about the size of a fist. Functions of the Heart keeps O2-poor blood separate from O2-rich blood; keeps the blood flowing in one direction—blood flows away from and then back to the heart in each circuit; creates blood pressure‚ which moves the blood through the circuits; Regulates the blood supply based on
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The test that were conducted on J.T. were a laboratory blood test‚ pulse oximetry test‚ an arterial blood gas analysis‚ a pulmonary function test‚ and a chest x-ray. The laboratory blood test may not directly tell if a person has COPD but they are important to note the possible causes of one’s symptoms and are useful for ruling out other disorders. A laboratory blood test also includes an arterial blood gas analysis which is useful to determine if one’s lungs are working properly and begs to answer
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How does the Indian Act continue to regulate First Nations peoples‚ their identities and nationhood in Canada? Ever since it was passed in 1876‚ the Indian Act has stirred negative feedback. It is a paternalistic and intrusive piece of legislature that essentially controls the political and day-to-day lives of the First Nations people. It is an Aboriginal versus white struggle that has lasted for more than a century. But now this is not entirely true. The indigenous communities of Canada have internalized
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*How does the brain communicate with the rest of the body? How is the autonomic branch of the peripheral nervous system involved in controlling emotions? The nervous system as a whole includes the Central Nervous System‚ consisting of brain and spinal cord‚ and the Peripheral Nervous System‚ whose nerve fibres connect all parts of the body with the central nervous system. The Peripheral Nervous System is further subdivided into two branches‚ the Somatic Nervous system and the Autonomic Nervous System
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How Smoking Affects Your Body There’s hardly a part of the human body that’s not affected by the chemicals in the cigarettes you smoke. Let’s take a tour of your body to look at how smoking affects it. Starting at the Top As a smoker‚ you’re at risk for cancer of the mouth. Tobacco smoke can also cause gum disease‚ tooth decay and bad breath. The teeth become unsightly and yellow. Smokers may experience frequent headaches. And lack of oxygen and narrowed blood vessels to the brain can lead to
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