Name:shasou Exercise 3: Neurophysiology of Nerve Impulses: Activity 5: The Action Potential: Measuring Its Absolute and Relative Refractory Periods Lab Report Pre-lab Quiz Results You scored 50% by answering 2 out of 4 questions correctly. 1. Which of the following occurs after the peak of the action potential? Your answer : b. Voltage-gated K+ channels open. Correct answer: d. All of these occur. 2. What is meant by Na+ channel inactivation? Your answer : a. The Na+ channel opens when the membrane
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spinal 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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experiment is to examine the results of stimulation on a frog’s sciatic nerve by looking at its compound action potential‚ the conduction velocity‚ and by quantifying the total and absolute refractory period between the nerve at room and cold temperature. An oscilloscope‚ preamplifier‚ and stimulator were used to stimulate the frog’s nerve located in the nerve chamber. Threshold voltage was determined by stimulating the nerve at increasing voltages until a compound action potential resulted. Absolute
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both empathy and sympathy in the reader by posing questions which induce consideration of an alternate standpoint as well as a feeling of helplessness and vulnerability. This vulnerability is denoted firstly by the title: ‘Crow’ has lost his ‘nerve’‚ leaving him devoid of faith in himself and therefore acutely aware of human judgement; as ‘his brain [had] slip[ed]’ he had become susceptible to the influence of his intrinsic condemnation. This theme of vulnerability and loss of character is indispensable
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we have also learned a lot about it since its initial discovery. Ebola originated in the African rainforest regions surrounding Zaire‚ where the first cases were discovered. Other known cases of Ebola infections have occurred in Gabon‚ Sudan‚ the Ivory Coast‚ Uganda‚ and the Republic of the Congo. Although we know the general area from which the viruses came‚ we don ’t know exactly where or what it came from. However‚ scientists believe it is "normally maintained in an animal host that is
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Hayley Schneider November 13‚ 2013 Global Issues “The Ivory Wars” Africa is in the middle of a growing epidemic elephant slaughter. This growing slaughter began in 2002 and is currently happening till this day. Conservation groups share that elephant poachers are killing tens of thousands of elephants every year‚ which is more than at any time since the “Ivory Wars” has started. Recently in Garamba National park‚ Paul Onyango says that he has never seen anything like this before. 22 elephants
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Introduction Neurons (also known as neurons‚ nerve cells and nerve fibers) are electrically excitable and the most important cells in the nervous system that functions to process and transmit information. Neurons have a large number of extensions called dendrites. They often look likes branches or spikes extending out from the cell body. It is primarily the surfaces of the dendrites that receive chemical messages from other neurons. One extension is different from all the others‚ and is called
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Question 3 Using any peripheral nerve bundle as a model‚ describe using figures (a) the general anatomical structure with key constituents identified and (b) the heterogeneity in the electrical conductivities of the different constituents. For this question‚ I will be using the sciatic nerve as my model. The sciatic nerve consists of several main structures as can be seen in Figures 5 below. Figure 5: Cross section of the sciatic nerve. The inset in the top image shows individual fibers wrapped
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Trigeminal nerve: V1 and V2 Trigeminal nerve provides large root of sensory nerve to the front of the face and head‚ and a small root of motor nerves to innervate muscles of mastication‚ mylohyoid‚ and digastric (anterior belly) Sensory root Fibres Convey common sensation (touch‚ temperature‚ pressure‚ pain) to the skin of the front of the face and the scalp as far back as the vertex of the head Sensory innervation to the oral cavity‚ dental and paradental structures For this reason‚ branches
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to provide an alternate outcome. This paper will define the battle‚ review the settings‚ describe the actions‚ and assess the significance of the actions for Operation Ivory Coast. Furthermore‚ this paper will relate the causes and effects of essential elements critical to the tactical success and mission failure of Operation Ivory Coast. Ultimately‚ all contributing factors will coalesce into lessons learned from the operation that are still applicable to this day. Define the Battle The
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