Drugs and the nervous system Neurotransmitters within the body include excitatory and inhibitory‚ noradrenalin‚ dopamine‚ serotonin; acetylcholine and glutamate are examples of excitatory neurotransmitters. GABA and glycine are examples of inhibitory neurotransmitters. General anaesthetics General anaesthetics act mainly on the central nervous system to stop information processing; these may be given by inhalation or intravenously. Nitrous oxide or laughing gas is used in maintain anaesthesia
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Vanessa Yang Smith Period 6 Biology HP 17 March 2014 Biology Study Guide: Unit 6 Physiology III Benchmark 1. Homeostasis maintains and keeps a balance of an organism’s internal environment. 2. The body maintains homeostasis by the feedback inhibition‚ in which a stimulus produces a response that opposes the original stimulus. 3. The axon terminal is the nerve ending. The nodes speed up the message. The myelin sheath is an insulating membrane. The axon carries impulses away from the cell body
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Units of Chapter 8 • Conservative and Nonconservative Forces • Potential Energy • Mechanical Energy and Its Conservation • Problem Solving Using Conservation of Mechanical Energy • The Law of Conservation of Energy • Energy Conservation with Dissipative Forces: Solving Problems Copyright © 2009 Pearson Education‚ Inc. Units of Chapter 8 • Gravitational Potential Energy and Escape Velocity • Power • Potential Energy Diagrams; Stable and Unstable Equilibrium Copyright © 2009
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rider we also added a littlest pet shop dog which was glued to the front. I would have to say our car was the cutest. For our car we decided to make it a rubber band car since that would give it the most mechanical and potential energy. The rubber bands were to act as our potential energy since it stored all the energy as we pulled it back to wind it up. The whole car then would be running on mechanical energy. As the rubber bands unwind‚ it turns the rear axle of the car which then drives the rear
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work rises so does the displacement and power as shown in the experiment. In the second part of the experiment when an object is lifted up in a curve motion its gravitational potential energy increases. Based on the experiment we conclude that the work done on the curve path is directly proportional to the gravitational potential energy. Conclusion: Using the data taken from 4 trials‚ we have computed for the power done by the fan cart by using the formula of work (W=Fs)‚ and power (P=Work/time)
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purpose of this experiment is to calculate the gravitational potential energy through experimental values‚ to calculate the theoretical potential energy given the experimental kinetic energy in an isolated system while also using the kinetic energy to find the spring constant‚ and to compare kinetic energies and potential energies in an isolated system to see if they are equivalent. METHOD To calculate the gravitational potential energy through experimental values‚ we dropped a racquetball
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Holt Physics—Chapter 5: Work and Energy Price I. Section 5.1—Work A. Definition of work 1. Work does not mean the same thing in Physics as it does in the everyday sense of the word. 2. Work is defined as a force causing a displacement. Work = force x displacement W = Fd 3. Work is NOT done on an object unless the displacement is greater than zero 4. The only forces that are considered to do work are those that
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observed an action potential was 3.0V 2. How does this tracing compare to the one that was generated at threshold voltage? The small increase in voltage causes a small increase in the height of the action potential peak. 3. What reasons can you give for your answer? Recruitment of the nerve’s neurons. Increasing the voltage will cause most of the neural fibers to experience depolarization. 4. At what voltage did you no longer observe an increase in the peak of the action potential trace? Maximum
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Nerve Impulse Activity 1: Electrical Stimulation 1. Do you see any kind of response on the oscilloscope screen? No there was no response‚ the line was flat 2. What was the threshold voltage‚ or the voltage at which you first saw an action potential? 3.0V 3. How does this tracing compare to the one that was generated at the threshold voltage? At 3.5V the high & low peaks were just slightly above and below respectively the tracing that occurred at 3.0V 4. What reason can you give for the change
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Grade 11 Physics: Summative Cart Analysis Report 2012 – 2013 Purpose: • To build a gravity cart that moves by using the gravitational potential energy from a falling mass. • To record the motions of the cart by and analyze the motions through d-t‚ v-t‚ and a-t graphs. • To find the efficiency of energy and explain the factors those cause the loss in energy. Procedure Building cart 1. The materials for the cart were gathered. - Shoebox (1) - Pole (2) [0.75cm radius] - Axle (2) [0
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