"12 what was the effect of lidocaine on eliciting an action potential" Essays and Research Papers

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    What is an action potential? To put it simply‚ it is a message that is sent down the nervous line. The message is written and is sent from the central nervous system. That message is addressed to muscles or glands. This essay will explain what happens before‚ during‚ and after an interneuron action potential. To accurately define an action potential‚ it is part of the incredible course of events that occur during the firing of a neuron. When a neuron is not firing signals‚ the interior of the

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    Lidocaine

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    Lidocaine also known as Xylocaine‚ or Ligocaine is a local anesthetic. It is used in various forms such as a topical gel‚ topical liquid‚ topical ointment‚ oral gel or liquid‚ a dermal patch‚ injected intravenously‚ IV‚ subcutaneously or inhaled by a nebulizer. Topically is used to relieve itching‚ burning or pain from skin inflammations. Liocaine injection is used to numb the area of your body to help reduce pain that’s caused by invasive medical procedures such as needle punctures‚ surgery‚ insertion

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    action potential

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    The formation of an action potential can be divided into five steps. (1) A stimulus from a sensory cell or another neuron causes the target cell to depolarize toward the threshold potential. (2) If the threshold of excitation is reached‚ all Na+ channels open and the membrane depolarizes. (3) At the peak action potential‚ K+ channels open and K+ begins to leave the cell. At the same time‚ Na+ channels close. (4) The membrane becomes hyperpolarized as K+ ions continue to leave the cell. The

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    Action Potentials

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    Action Potentials An action potential is the change in electrical potential associated with the passage of an impulse along the membrane of a muscle cell or nerve cell. An action potential occurs when a neuron sends information down an axon‚ away from the cell body. A threshold is the minimum amount of stimulation needed to start a neural impulse (you know‚ the electrical impulses that travel throughout your body carrying important information). Action potentials generated by neural impulses are

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    Lidocaine

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    Lidocaine Today I am going to talk to you about surgery and what type of drug that will be used to help during a surgical procedure. There are many different drugs that will be used in a surgical procedure but the one that I will give information on today is called Lidocaine. Lidocaine can be used in several different ways. The routes of administration include; “direct IV (Skidmore pp.624)” (into the vein with injection)‚ “continuous IV (Skidmore pp.624)” (a constant flow of medication into

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    Uses of Lidocaine

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    that some of you would like to be a nurse practitioner or nurse anesthetists. Both are great ideas and wonderful career choices. Today we will discuss a few topics; pain‚ nerve response‚ drug of choice to aid the pain and what action and reaction to expect. We will talk about Lidocaine it’s a topical gel. Topical means you apply it on the skin or the epidermis. Epidermis is the medical term for skin and dermis the layer that underlying the epidermis. These are the first and second layers of skin. Your

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    allow an Action potential to occur in a neuron. This will be achieved by firstly‚ defining the purpose of neurons in the body along with a description of the components within a neuron and how they enable information to be passed through the cell membrane and on to other neurons. Secondly‚ the resting potential of a neuron will be explored with relation to the concept of selective permeability and the purpose of the Sodium - Potassium pump. Thirdly‚ the molecular basis of the Action Potential will

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    Compound Action Potentials

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    Smith BIOL 3810-504 Compound Action Potentials Date Performed: 15FEB2011 Date Due: 01MAR2011 Introduction Neurons are the cells that receive and transmit electrical signals (University of North Texas‚ 2010). The ability of the neuron to conduct these impulses is because of an electrochemical voltage across the plasma membrane of that neuron. An action potential is an all or nothing response to a stimulus along a single axon. A compound action potential is a graded response that results

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    Cardiac Action Potential

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    which of the following? You correctly answered: c. autorhythmicity 2. Phase 2 of the cardiac action potential‚ when the calcium channels remain open and potassium channels are closed‚ is called the You correctly answered: a. plateau phase. 3. Which of the following is true of the cardiac action potential? You correctly answered: b. The cardiac action potential is longer than the skeletal muscle action potential. 4. The main anatomical difference between the frog heart and the human heart is that the

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    Neuro Action Potential

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    membrane Na cl ‚K and Ca ions and they just flow back and fourth without any gate keeper or obstruction‚ When the neuron is at rest its cytoplasm is Negatively charged. That means that it is not going under depolarization‚ we use the term resting potential. Modality gated channels- specific to sensory neurons‚ open in response to mechanical forces (i.e. stretch‚ touch‚ pressure‚ temperature changes or chemicals) Ligand- is a particular molecule that causes a receptor to open. The ligand gated

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