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Questions and Answers
What is the process called when the cell potential returns to its resting value due to sodium pumping phenomenon?
What is the potential measured during the stage called 'Depolarization'?
How is the process of repolarization achieved?
What is the term for the increase in cell potential after repolarization for a short period of time?
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What is the most important difference between bioelectric current flow in living organisms and the type of electrical current used to produce light and heat?
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What is the potential measured at the stage called 'Depolarization'?
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What is the process called when the cell potential returns to its resting value due to sodium pumping phenomenon?
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Which term refers to the increase in cell potential after repolarization for a short period of time?
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What is the most important difference between bioelectric current flow in living organisms and the type of electrical current used to produce light and heat?
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How is the process of repolarization achieved?
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What is the process called when the cell potential returns to its resting value due to sodium pumping phenomenon?
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Which term refers to the increase in cell potential after repolarization for a short period of time?
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What is the potential measured during the stage called 'Depolarization'?
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How is the process of repolarization achieved?
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What is the most important difference between bioelectric current flow in living organisms and the type of electrical current used to produce light and heat?
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Study Notes
- Dr. S.Gnana Saravanan is handling the 22BM2011 Signal Conditioning Circuits module in Department of Biomedical Engineering.
- Biopotential Measurement is being covered in Module 1.
- Biopotentials and bioelectric currents are essential concepts in the study of electricity in living organisms.
- Bioelectric currents consist of three types: Action potential, Nernst Potential, and Diffusion Potential.
- Bioelectric events are detected using bio-electrodes and electrode-skin interfaces.
- Luigi Galvani conducted the Dead Frog Experiment in 1791, marking the origin of the study of bioelectricity.
- A human cell is composed of various types of cells, each containing ions such as Sodium and Chloride.
- A cell in the resting state has a stable electric potential difference, called the Resting Potential.
- This potential is in the range of -60 to -100mV and is maintained by the cell being polarized.
- Stimulation of a cell causes the membrane to become permeable to Sodium and Chloride ions, leading to Depolarization.
- Depolarization results in an Action Potential, which is a measure of the potential difference at this stage.
- After the Action Potential, the cell goes through Repolarization by the Sodium Pumping process, which quickly pumps Sodium ions out of the cell.
- Hyperpolarization occurs for a short period after Repolarization, increasing the cell potential beyond the Resting Potential.
- Muscular Contraction and Expansion are caused by the migration of ions and the resulting potential differences.
- Bioelectric current flow in living organisms is different from electrical current used to generate light or heat, as it is influenced by the biological environment.
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Description
Test your knowledge on biopotential measurement and signal conditioning circuits in biomedical engineering. Learn about bioelectric currents, action potential, Nernst potential, and the detection of bioelectric events.
