BI309 Lab-2 Name of student: Anisa Dreunibakarua ID #: S11033198 Title: Effect of Temperature and Stimuli on Simple Muscle Twitch. Introduction: Skeletal muscle is a type of striated muscle that is attached to skeleton to facilitate movement by applying force to bones and joints through contraction. Skeletal muscle generally contract voluntarily when stimulated by the nerve‚ although they can also contract involuntarily at times. Muscle action is controlled by the Nervous System
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Exercise 1: The effects of nerve stimulation A. Describe briefly what you have done for this section (maximum 100 words). Basically I am the volunteer. Two students handle the system while one student helps to spread the adequate electrode cream on the volunteer’s left wrist. The system is set to continuous‚ frequency is 1Hz‚ pulse duration at 200μs and pulse current at 10mA. The stimulator is switched off to disconnect the isolated stimulator terminals. The stimulus is then switched on and
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E 2 Skeletal Muscle Physiology O B J E C T I V E S 1. To define these terms used in describing muscle physiology: multiple motor unit summation‚ maximal stimulus‚ treppe‚ wave summation‚ and tetanus. 2. To identify two ways that the mode of stimulation can affect muscle force production. 3. To plot a graph relating stimulus strength and twitch force to illustrate graded muscle response. 4. To explain how slow‚ smooth‚ sustained contraction is possible in a skeletal muscle. 5. To graphically
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The Disheartening Truth of Cyber Love In her article “Virtual Love‚” Meghan Daum‚ a freelance writer‚ claims people become to comfortable with the security that online communication provides. Daum‚ herself‚ experiences this first hand. Through Daum’s experience with PFSlider‚ she is able to inform her readers about the troubles that may arise if you become engulfed in e-mail affairs. Daum’s relationship simply began as a flattering e-mail written to her by Pete‚ an admirer who lived hundreds of
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Before the motor neuron cone arrives the muscle fiber‚ AChR clusters are formed in the middle section of a muscle fiber. When the growing nerve cone attaches the muscle fiber‚ Agrin activates Lrp4‚ which then binds to the receptor tyrosine kinase MuSK‚ through this binding MuSK is phosphorylated and starts to form the neural and aneural AChR clustering (Burden 2011). Morphologic differences in the pre- and/or postsynaptic part of the NMJ can be a hint of a certain disease. In the following figure
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First of all we have to defreniate between the musle stenght and muscles power. Musle stenght: Muscular strength defined as the ability of a muscle /group of muscles to contract with maximal force. Muscular strength describes how strong a muscle is or how much force it can exert. Exercise professionals often measure muscular strength by determining the maximum weight a person can lift at one time. There are 2 components to gain muscles strength; 1) The neural component (short-term). 2) The hypertrophic
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teacher to give special attention to students who may need it (e.g. students with learning difficulties). 6 Online Learning Also known as E-Learning‚ On-line learning is based on Computer-Based Learning/Training and has increasingly made use of virtual classrooms (whereby online presentations are given live) via a network or the World Wide Web2. The six main types of online training currently provided are: • Web pages • EBook courseware • Interactive Learning • Screen
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Virtual Servers Table of Contents I. Table of Contents II. Introduction III. Executive Summary IV. Virtual Servers a. What Are They? b. What Do They Replace? c. Requirements V. Advantages d. Maintenance e. Green Solution f. Disaster Recovery VI. Conclusion VII. References Introduction As the technology timeline continues in full momentum‚ companies tend to struggle behind‚ trying to catch up. Where we talk about in this
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Virtual Reality Virtual reality has promise for nearly every industry ranging from architecture and design to movies and entertainment‚ but the real industry to gain from this technology is science in general. The money that can be saved examining the probability of experiments in an artificial world before they are actually carried out could be great‚ and the money saved on energy could be even greater. Virtual reality is something that personally excites me because uses and benefits of it are
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Virtual teams were almost unheard of a decade ago‚ but today they are an integral part of every organization. The recent “offshore outsourcing” trend and the growth of the Internet and similar globally linking technologies are major contributor to the increase in the use of virtual teams. Virtual teams are made up of people working on interdependent tasks and interacting largely via communication technology to achieve a common goal without concerns of time and space. Such teams carry out many critical
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