10/21/14 Nervous system: one of the eleven major body organ systems in animals; coordinates and controls actions of internal organs and body systems; receives and processes sensory information from external environment; coordinated short-term reactions to these stimuli. Cell body: the part that contains the nucleus and most of the cytoplasm and the organelles. Axon: sends messages away from the cell body to other neurons. Dendrite: short‚ highly branched fibers that carry signals toward the cell
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The Effects of Selected Drugs and Diseases on the Central Nervous System Due May 4th‚ 2015 Unit 7 Assignment 2 AP 1 – Monday Morning Melissa Rios ABSTRACT The purpose of this paper is to provide information about the drugs Alcohol‚ Aspirin‚ Lidocaine‚ Morphine‚ Ketamine and succinylcholine. It’s important to understand what they are‚ what they do‚ how they are broken down in the body (physically and chemically) and what diseases they can either treat or cause. Certain drugs
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When substances like acetylcholine and norepinephrine are released in the body‚ they tend to bind to receptors‚ tissues and neurons. These neurotransmitters transfer signals throughout the nervous system and stimulates action potentials in the postganglionic neurons. Receptors found on the ANS and PNS includes the cholinergic receptors‚ which consists of all sympathetic and parasympathetic preganglionic‚ sympathetic postganglionic and all parasympathetic postganglionic neurons. The cholinergic receptors
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Relationship and Differences between the Central and Peripheral Nervous Systems 73211 Brain & Behaviour Assignment Two The Open Polytechnic of New Zealand 3264 words CENTRAL AND PERIPHERAL NERVOUS SYSTEMS “From the brain‚ and from the brain alone‚ arise our pleasure‚ joys‚ laughter‚ and jokes‚ as well as our sorrows‚ pains‚ griefs‚ and tears. Through it‚ in particular‚ we see‚ hear‚ and distinguish the ugly from the beautiful‚ the bad from the good‚ the pleasant from the unpleasant
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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 areas‚ such as the 5 senses. Sensory receptors
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motion. (5) Q.4 a) How have optical astronomy and radio astronomy aided in the study of universe? (5) b) Discuss the features of planet Mars gathered till date by the scientists. (5) Q.5 a) With the help of an example explain the systems view of life. (2) b) Explain the theory of natural selection proposed by Darwin. (3) c) Explain the carbon cycle with the help of a diagram. In what way human activities have altered the balance of carbon cycle? (5) Q.6
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1 Chapter 1 INTRODUCTION Alcohol drinking has been practiced in the majority of human society since early times. Alcohol (ethyl alcohol) is a drug which acts principally as a depressant on central nervous system. Its effects on behavior are well known and regular use gives rise to an increased tolerance‚ so that the drinker needs to take gradually increasing amounts to obtain the same effect. Chronic excessive alcohol consumption leads to life threatening hazards (Best‚ 1999). Alcohol related diseases
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Neurofibromatosis is a genetic disorder that ceases cell growth in the nervous system and it can cause tumors to grow on the nervous tissue. These tumors can occur anywhere in the nervous system‚ this includes the brain‚ nerves‚ the spinal cord‚ skin‚ and many more of the body’s systems. These tumors tend to be benign or in other words they are non-cancerous. The development of these benign tumors may cause skin and or bone abnormalities. These tumors‚ also known as neurofibromas‚ form on nerves
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shrimp-like in that it is elongate and nearly cylindrical in cross section. The abdomen is well developed and its segmentation is easily noted. The crayfish has bilateral symmetry‚ anterior‚ posterior‚ dorsal‚ ventral‚ right‚ and left. Nervous System The crayfish nervous system
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When you are diagnosed with a brain tumor‚ it is a scary life-changing event. The brain is one of the most important vital organs‚ and if found with a brain tumor‚ go to the doctor for immediate help. The brain and spine make up the central nervous system or CNS. Where each vital function is controlled. So if you have a tumor in your CNS‚ it can effect everything you do like: your thought process‚ how you talk‚ and even how you can walk. There are two types of brain tumors‚ primary and secondary
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