The nervous system is the most important system in the body. It transmits impulses to and from the brain. Disruption of the nerve cells and fibers that transmit the messages severely impairs the body’s ability to carry out complex function. Once a disruption occurs‚ one may never recover and neurological function will steadily degrade. Multiple Sclerosis is a disease that disrupts this network. Multiple Sclerosis (MS) is the most common disabling neurological disease in young adults between 20 and
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Guillain-Barre syndrome (GBS) is an autoimmune disorder of rapid-onset muscle weakness as a result of damage to the peripheral nervous system. The peripheral nervous system is the portion of the nervous system that is outside the brain and spinal cord. Autoimmune means an illness that occurs when the body tissues are attacked by its own immune system. In this case they begin attacking nerve cells which communicate with muscles. They attack the myelin sheaths surrounding the axons of the nerve cells
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SPECIAL SENSES GENERAL PRESENTATION Overview of the Nervous System • Endocrine and nervous systems maintain internal coordination – Endocrine system: communicates by means of chemical messengers (hormones) secreted into to the blood – Nervous system: employs electrical and chemical means to send messages from cell to cell 12-2 Overview of the Nervous System • Nervous system carries out its task in three basic steps • Sense organs receive information about changes in the body and external environment
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Lab Report: Exercise 10: Organization of Nervous Tissue Purpose: What is the purpose of this exercise? Are there any safety concerns associated with this exercise? If so‚ list what they are and what precautions should be taken. To understand the structure and function of multipolar neuron‚unipolar and bipolar neurons. Also to identify the structures of a nerve. There are no safety concerns for this lab. Step 1: Relates to Lab Exercise 10/Activity 1‚ 3‚ and 4. Assignment 1: Write a brief description
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Report:Nervous System Please fill out this report and submit it to the dropbox. Do not hand in your own form. It will not be graded and you will receive a zero for the lab. You must get all parts correct to get credit for the question * Please note that although you do not hand in items in observations‚ it is very important to do these as you may see some of these items on future/associated lab quizzes or be asked about some of these concepts on unit assignments. Step 1: Nervous Slides Assignment
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how a structure functions. Cell - the basic unit of structure and function in all living things. Organism -the highest level of organization‚ which is made up of the different organ systems. Directional - terms describe the locations of structures in relation to other structures or locations in the body. System -group of organs that work together to perform a particular function. Cavities -spaces of the body contain the internal organs‚ or viscera. Plane - flat surface divided with an imaginary
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The Nervous System (pp. 54-57) 4. Identify the major divisions of the nervous system and describe their functions‚ noting the three types of neurons that transmit information through the system. 5. Contrast the simplicity of the neural pathways involved in reflexes with the complexity of neural networks. The Brain (pp. 58-80) 6. Identify and describe several techniques for studying the brain. 7. Describe the functions of the brainstem‚ thalamus‚ cerebellum‚ and limbic system.
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toward bilateral symmetry and cephalization * Invertebrate Nervous Organization * In simple animals‚ such as sponges‚ the most common observable response is closure of the osculum (central opening) * Hydras (cnidarians) have a nerve net that is composed of neurons * Planarians‚ (flatworms) have a ladderlike nervous system * In annelids (earthworm)‚ arthropods (crab)‚ and molluscs (squid) the nervous system shows further advances * Cephalization - concentration of
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described so far are relevant to the nervous system? Are his symptoms sensory‚ motor‚ or both? Nick has complained of burning and prickly pain in feet‚ clumsiness‚ dizziness when sitting or standing‚ and vision problems. These are symptoms of both sensory and motor nerve damage. B. Do you think the symptoms Nick describes are likely caused by peripheral nerve damage? Could they be caused by damage to the central nervous system? I believe there has been peripheral nerve damage because of the symptoms
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what we are seeing. Our brain then computes to pick up the box. When a message comes into the brain from anywhere in the body‚ the brain tells the body how to react. the brain as a central computer that controls all bodily functions‚ then the nervous system is like a network that relays messages back and forth from the brain to different parts of the body. It does this through the spinal cord‚ which runs from the brain down through the back and contains nerves that branch out to every organ
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