How does stress affect the immune system The immune system is designed to defend the body against millions of antigens that would otherwise invade it. None of these things are able to get in when your immune system is working efficiently‚ but the moment your immune system stops functioning properly‚ the opportunity for antigens to attack is available. Kiecolt-Glaser (1984) carried out a natural experiment investigating whether the stress of short-term stressors had an effect on immune system functioning
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1. How does a cell become differentiated? A cell becomes differentiated by using only the DNA that it needs. 2. Give an example of 2 differentiated cells. Two examples of differentiated cells are lysosomes and mitochondria. Lysosomes are small so they can move throughout the cell effectively. Mitochondria have a lot of surface area to make more energy 3. (Essay) What does it mean to be specialized? Explain how the structure of the cell determines its function. Give at least 3 examples. Being specialized
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How an SCR works?-Principle of Operation SCR Working Principle The SCR is a four-layer‚ three-junction and a three-terminal device and is shown in fig.a. The end P-region is the anode‚ the end N-region is the cathode and the inner P-region is the gate. The anode to cathode is connected in series with the load circuit. Essentially the device is a switch. Ideally it remains off (voltage blocking state)‚ or appears to have an infinite impedance until both the anode and gate terminals have suitable
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biloba affects the cardiovascular system and the central nervous system. Elasticity of the blood vessels‚ from the largest arteries to the smallest capillaries‚ improves the circulation in the limbs and brain. Similarly‚ acetylsalicylic acid acts by reducing blood viscosity and by reducing the risk of blood clots. It also has antioxidant properties. It removes free radicals and protects healthy blood cells. Some researchers claim that it supports the nervous system. increasing the supply of oxygen
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Global distribution system Internet Distribution SYSTEM Karyon strategically partners with internationally respected travel industry companies to provide you with the services‚ products and connectivity to build the operational backbone for single or multi-property distribution management. As a result‚ Karyon enables you to increase revenue‚ improve guest loyalty‚ and reduce costs by centralizing and streamlining your operations while maximizing existing technology investments. Our distribution
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purpose of ISP is to enable people to search the internet for various things such as music and games‚ people also use them to find information about things. The speed of your internet depends on how far you are from the nearest ISP so if you live opposite the ISP you will have a fast connection where as some one who lives on the other side of the block will have slower connection as they are further away. That’s why companies like BT and Sky say up to because if you live further away the slower it takes
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(veins)‚ and the stomates. The upper and lower epidermal cells do not have chloroplasts‚ thus photosynthesis does not occur there. They serve primarily as protection for the rest of the leaf. The stomates are holes which occur primarily in the lower epidermis and are for air exchange: they let CO2 in and O2 out. The vascular bundles or veins in a leaf are part of the plant’s transportation system‚ moving water and nutrients around the plant as needed. The mesophyll cells have chloroplasts and this is
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Technology is fundamental to the understanding of internal body systems as it can be used to diagnose‚ monitor‚ or treat any diseases or conditions in the digestive‚ circulatory‚ and respiratory system. Numerous forms of technology can be used to diagnose diseases in the three internal systems earlier. Additionally‚ technology has helped people better understand how these systems work in order to improve the quality of health care provided and have better treatment options. Based on all the knowledge
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each of them work in different parts. The brain has many jobs. It controls our spinal cord‚ our central nervous system and our nervous system. The spinal cord carries messages to the brain and also to the nerve cells that carry messages from the brain. Your body senses everything. Like something smashing your toe. You react to it. It all sends itself to the brain and it reacts. The cerebrum‚ controls thinking. The nerve cells carry information from all central nervous system. Like certain
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How does the novel Frankenstein benefit from Walton as a narrator? By Alex Hewitt The beginning and ending of the novel Frankenstein are written in epistolary form as a series of letters from Robert Walton‚ to his sister. The letters are unusual as they contain very little information about Walton’s sister and mostly detail Walton’s exploits in exploring the Arctic in search of the North-West Passage‚ in this way resembling journal entries instead of letters. While Walton spends many pages explaining
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