REVIEW SHEET EXERCISE 6 Cardiovascular Physiology NAME: LAB TIME/DATE: 1. Define each of the following terms: • autorhymicity- The heart is autorhythmic. This means it generates its own rhythmic action potential independent of the nervous system. • sinoatrial node- is the impulse-generating (pacemaker) tissue located in the right atrium of the heart‚ and thus the generator of normal sinus rhythm. • pacemaker cells- are specialized cells that cause involuntary muscles and tissues to
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Syllabus. Eliciting a Nerve Impulse Activity 1: Electrical Stimulation 1. Do you see any kind of response on the oscilloscope screen? Just a flat line. 2. What was the threshold voltage‚ or the voltage at which you first saw an action potential? 3.0 V 3. How does this tracing compare to the one that was generated at the threshold voltage? Very similar except that it’s peak is a little higher while it drops a little more as well. 4. What reason can you give for the change
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to let an organism gain information about what is going on inside/outside body and how to respond to it. Three functions of the nervous system: • receive information; input • integrate information with past experiences; processing • Guide actions; output. Brain can adjust the impact of incoming information (can’t tickle oneself) Brain cells communicate by chemicals signals released by other cells. Made of separate cells Neurons: cells that are specialized to quickly respond to signals
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emeraldinsight.com/0262-1711.htm Action research for practising managers Steven French Coffs Harbour Centre for Enterprise Development and Research‚ Southern Cross University‚ Coffs Harbour‚ Australia Abstract Purpose – The paper seeks to develop a coherent model for the application of action research to problems in the field of management. Design/methodology/approach – An extensive review of the literature was undertaken. Findings – No model of the process of conducting an action research programme is extant
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event an electrical signal is propagated through the length of the axon of a motor nerve. This electrical signal‚ also propagated through ion channels‚ causes the opening of calcium ion channels. These calcium ion channels ‚ guided by the membrane potential‚allow calcium ions to diffuse into the axon terminal of the motor neuron. As more calcium ions travel into the axon of the motor neuron‚ synaptic vesicles begin to form around acetylcholine and leave the axon of the motor neuron‚ entering the synaptic
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receptor 2. All of the following are features of graded potentials except… a. decremental d. occur at dendrites b. sub-‐threshold e. can be inhibitory c. non-‐decremental Identify the following features of the action potential for a typical neuron. Be aware of the sequence of events.
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Affirmative Action in Education “Affirmative action is an effort to develop a systematic approach to open the doors of education‚ employment and business development opportunities to qualified individuals who happen to be members of groups that have experienced long-standing and per” -Bill Clinton It is a stated fact that without Affirmative Action‚ a large number of America’s premier colleges and universities would be mostly occupied by White males and Asian American students‚ who tend
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SECTION A: Short questions 1. Is affirmative action morally defensible? Explain Yes it is morally defensible in that: The tough realities faced in the past created divisions of the past regime between black and white communities and declaration of this policy assisted in ensuring that closing that gap and normalise the conditions at the workplace. In the past South Africa has had many inequalities and imbalances‚ and blacks were treated in a unfair manner and stigmatized. In 1994 Democracy
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Affirmative Action: Fisher v The University of Texas Affirmative Action. For many Texas high school students‚ these two words haunt them. Their future‚ or at least their future at the University of Texas‚ depends on these words. For Abigail Noel Fisher‚ a 2008 graduate from Sugar Land‚ Texas‚ affirmative action and its race bias policies allegedly ruined her chances of getting into this prestigious state university. Fisher argues that race should not be a factor in college admissions processes
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The Effects of Temperature on the Extracellular Firing Rate of Action Potentials in the Ventral Nerve Cord of the Periplaneta Americana Andrew Goldsmith (andrew.goldsmith@uconn.edu)‚ Tuesdays 1-4PM Section: 2 (Partner: Ana Charalambides) Abstract In polikiotherms it is known that the amount of locomotion varies based on the environmental temperature. We believe that this is caused by differences in the neural activity. We therefore investigated how temperature changes affect the extracellular
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