experiment was to examine how the compound action potentials propagate down the sciatic nerve of a frog based on varying stimuli. Before the nerve could be tested it needed to be extracted from the thigh of the frog and then submerged in saline. Several varying stimuli were used and recorded by a software package. The second experiment requires a constant stimulus with varying reference pin locations. From this the velocity of the action potential propagated can be determined. The experiment revealed that
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stenosis at this level. In addition‚ there is a disc osteophyte complex and disc space narrowing at L5-S1 with mild spinal stenosis and left greater than right mild foraminal stenosis. Furthermore‚ there is impingement upon the left L5 nerve root. EMG and nerve conduction report dated 05/06/14 revealed evidence of bilateral L5 lumbar radiculopathy and bilateral peripheral neuropathy. Per operative reports‚ IW underwent left L4-5 and L5-S1 transforaminal ESI on 11/07/2014; 05/15/2015; and 07/24/2015‚
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2/27/12 A. Objective I. Activity 1-4: Eliciting a Nerve Impulse • Investigate what kinds of stimuli stimulate action potential. II. Activity 8: Nerve Conduction Velocity • Determine and compare the conduction velocities of different types of nerves. B. Introduction I. Activity 1-4: Eliciting a Nerve Impulse • In this experiment‚ we will be investigating what stimulates action potential on the nerve being tested on the oscillator. The factors that helped determine
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study the time taken between a stimulus and a response‚ how the spinal cord and peripheral nerves function‚ and how to measure and record response time related to a stimulus using the Labscribe software. For the second part of the lab‚ electromyograms will be triggered and recorded in order to study the Achilles and patellar stretch reflex and the reflex arc. Also‚ to understand nerve conduction velocity‚ EMG‚ and motor control. 2. The objectives of the first part of this lab is to observe and
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Exercise 3 Neurophysiology of Nerve Impulses Eliciting (Generating) a Nerve Impulse 1. Why don’t the terms depolarization and action potential mean the same thing? They require different things. Action potential requires depolarization and repolarization. Depolarization doesn’t require anything. 2. What was the threshold voltage in Activity 1? 3.0V 3. What was the effect of increasing the voltage? How does this change correlate to changes in the nerve? The action potential increases
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REVIEW SHEET EXERCISE 3 Neurophysiology of Nerve Impulses NAME: LAB TIME/DATE: Eliciting (Generating) a Nerve Impulse 1. Why don’t the terms depolarization and action potential mean the same thing? Action potential is a quick depolarization followed by a repolarization. Depolarization is a one way trip. It also takes a substantial depolarization to cause an action potential. 2. What was the threshold voltage in Activity 1? 3.0 V 3. What was the effect of increasing the voltage?
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REVIEW SHEET EXERCISE 3 Neurophysiology of Nerve Impulses NAME: 1. Match each of the definitions in Column A with the appropriate term in Column B. Column A Column B __D__ term that refers to a membrane potential of about -70 mv __F__ reversal of membrane potential due to influx of sodium ions __B__ major cation found outside of a cell __A__ minimal stimulus needed to elicit an action potential __E__ period when cell membrane is totally insensitive to additional stimuli‚ regardless
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What nursing diagnosis would be appropriate for this patient? Risk for skin breakdown r/t insufficient attention paid to mucosa AEB constant oral drainage. 8. What tests are currently done to assist with the diagnosis‚ today? Today‚ Nerve conduction velocity (NCV) tests can be done as well as testing CSF for more protein than normal. 9. How did you cope with reading this book? At times‚ this book
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to 120 mm Hg. 2. The respiratory rate increases to 20 breaths per minute. 3. The systolic blood pressure increases by 20 mm Hg. 4. The heart rate increases by 20 bpm. A patient is being evaluated for possible carpal tunnel syndrome‚ and a nerve conduction velocity test is performed. Which of the following findings would MOST strongly support the diagnosis? 1. Decreased latency at the elbow. 2. Decreased latency at the carpal tunnel. 3. Increased latency at the carpal tunnel. 4. Increased latency at
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nductioIn heat transfer‚ conduction (or heat conduction) is the transfer of heat energy by microscopic diffusion and collisions of particles or quasi-particles within a body due to a temperature gradient. The microscopically diffusing and colliding objects include molecules‚ electrons‚ atoms‚ and phonons. They transfer microscopically disorganized kinetic and potential energy‚ which are jointly known as internal energy. Conduction takes place in all forms of ponderable matter‚ such as solids‚ liquids
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