Depolarization - Wikipedia
In biology, depolarization or hypopolarization[1][2] is a change within a cell, during which the cell undergoes a shift in electric charge distribution, resulting in less negative charge inside the cell compared to the outside.
Depolarization: Definition, Mechanism, vs. Repolarization
2024年4月30日 · Depolarization is the cellular event characterized by the shift in the distribution of electric charges within a cell, particularly evident in cell membranes, majorly neural membranes for the conduction of impulses.
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Depolarization - Definition and Examples - Biology Online
2023年5月29日 · Depolarization is when a change occurs inside a cell that causes the distribution of electric charges to alter, leaving the cell with a less negative charge than the outside. Numerous cell functions, cell-cell communication, and the general physiology of an organism all depend on depolarization.
Depolarization vs. Repolarization of the Heart (2024)
2024年10月18日 · Definition: Depolarization refers to the electrical activation of the heart muscle cells. It occurs when the resting negative charge inside the heart cells becomes more positive. Process: During depolarization, sodium (Na+) ions rush into the cells, causing the inside of the cells to become positively charged. This leads to muscle contraction.
Physiology, Action Potential - StatPearls - NCBI Bookshelf
2023年5月8日 · In neurons, the rapid rise in potential, depolarization, is an all-or-nothing event that is initiated by the opening of sodium ion channels within the plasma membrane. The subsequent return to resting potential, repolarization, is …
Depolarizing Neuromuscular Blocking Drugs - StatPearls - NCBI Bookshelf
2023年5月1日 · There are 2 types of neuromuscular blocking agents that work at the neuromuscular junction: depolarizing and non-depolarizing. Depolarizing muscle relaxants act as acetylcholine (ACh) receptor agonists by binding to the ACh receptors of the motor endplate and generating an action potential.
Graded potentials – Basic Human Physiology
Graded potentials can be of two sorts, either they are depolarizing (above resting membrane potential) or hyperpolarizing (below resting membrane potential) (Figure 14.1). Depolarizing graded potentials are often the result of Na + or Ca 2+ entering the cell.
Depolarization (Definition + Process) - Practical Psychology
2022年7月6日 · Depolarization is defined as a decrease in the polarity of the membrane potential. Depolarization is a shift in a cell's electric charge that makes the cell's interior increasingly more positive than the exterior. Electrical stimuli, or excitatory stimuli that raise the cell's voltage, cause the voltage-gated ion channels to open in the cell.
What Is Depolarization? (with picture) - AllTheScience
2024年5月21日 · Depolarization is the process of the electrical charge on a nerve cell's plasma membrane changing. If the change reaches a certain...