“Adversity has the effect of eliciting talents which in prosperous circumstances would have lain dormant.” What the Roman poet Horace was saying was that when there is an obstacle in our way‚ our true colors will radiate. I could not agree more. When we as human beings feel passionate about achieving a goal‚ we may learn something new of ourselves‚ maybe a new trait that we did not know we possessed‚ when we reach new heights we did not know we could push ourselves towards. Challenges are similar
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Eliciting (Generating) a Nerve Impulse 1. Why don’t the terms depolarization and action potential mean the same thing? Depolarization has to do with surfaces becoming more negative or positive and reaches a certain point called a threshold. When the threshold is reached‚ an action potential is initiated. 2. What was the threshold voltage in Activity 1? The threshold voltage in Activity 1 was 3.0. 3. What was the effect of increasing the voltage? How does this change correlate to changes
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for most neurons when considering changes in membrane potential? (3 points) 2. What is the resting membrane potential? (3 points) 3. What does it mean that the voltage just inside the membrane is negative? (4 points) Neurophysiology of Nerve Impulses Activity 2: Receptor Potential (20 points total) Notes: • After reading the Overview and Introduction‚ Click on Experiment. • Follow the directions on the left side of the menu to complete the lab. Use the data chart to answer the
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Moorpark College Neurophysiology of Nerve Impulses Laboratory Homework 20 Points Total Name: ___________________________________ PRINT THE FOLLOWING PAGES AND PROVIDE A HANDWRITTEN ANSWER TO ALL QUESTIONS. Answer the question in the space provided for each question. 1. In the PHYSIO-EX 9.0 Activity 1‚ the simulation showed you how the resting membrane potential depends on the concentration of K+ and Na+ in the ECF. Some data were generated while measuring the resting membrane potential
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Neurophysiology Lab Report Activity 1: 1. What was your observed threshold voltage? The voltage at which I first 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
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Name: Christina Hale Exercise 3: Neurophysiology of Nerve Impulses: Activity 4: The Action Potential: Importance of Voltage-Gated Na+ channels Lab Report Pre-lab Quiz Results You have not completed the Pre-lab Quiz. 02/28/15 page 1 Experiment Results You have not completed the Experiment. Experiment Data: 02/28/15 page 2 Post-lab Quiz Results You have not completed the Post-lab Quiz. 02/28/15 page 3 Review Sheet Results 1. What does TTX do to voltage-gated Na+ channels? Your answer: It
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your observations through the microscope of the neuron‚ the ox spinal cord smear‚ and the teased myelinated nerve. Answer these Questions: A. What is the functional difference between a neuron and a nerve? A neuron is a nerve cell and is a basic building block of the nervous system. Neurons also have special functions‚ like transmitting information throughout the body. A nerve is a bundle of neuron cells. B. What gives a multipolar neuron its name? A multipolar neuron contains several
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the maximal stimulus is achieved?: All the individual nerve fibers have been stimulated & responding all-or-none. What is the effect of curare on eliciting an AP?: Curare affects the synapse rather than nerve propagation. b/c curare works by blocking synaptic transmissions so that neural impulses do not travel from neuron to neuron. What is the effect of ether on eliciting an AP?: no nerve response What is the effect of lidocaine on eliciting an AP?: Blocks sodium ion channels from opening‚ inhibiting
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and Functional Properties and Electric Circuit Parameter Models from a Cellular Perspective. Neurons serve the purpose of receiving signals coming from neighbouring neurons; they assimilate these signals‚ and generate nerve pulses. They then conduct and transmit these nerve pulses to other neurons which are capable of receiving them. Neurons are the structural constituents of the brain. Typically‚ neurons are five to six orders of magnitude slower than silicon logic gates. Neural events happen
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Exercise 3: Neurophysiology of Nerve Impulses: Activity 2: Receptor Potential Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. Assuming that the resting potential of a sensory neuron is -70 mV‚ which of the following represents a depolarization? You correctly answered: c. a change to -60 mV 2. Which of the following is a sensory modality (type of sense)? You correctly answered: e. all of the above 3. Which of the following is a sensory stimulus
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