How Do You Spell DEPOLARISATION?

Pronunciation: [diːpˌə͡ʊləɹa͡ɪzˈe͡ɪʃən] (IPA)

Depolarisation is spelled with the IPA phonetic transcription /dɪˌpəʊləraɪˈzeɪʃən/. The word includes five syllables, with the primary stress on the fourth syllable (-rai-). The word is derived from the root word 'polar', which refers to the existence of two opposite charges, a positive charge and a negative charge. Depolarisation occurs when the voltage across the membrane of a polarized neuron or muscle cell rapidly falls, leading to a change in the cell's electrical potential. This change allows for the activation of certain physiological processes.

DEPOLARISATION Meaning and Definition

1. Depolarisation is a physiological and electrical process that occurs in nerve cells, muscle fibers, and other excitable tissues. It refers to the elimination or reduction of the membrane potential difference that exists between the inside and outside of a cell, thus causing the membrane potential to become less negative.

   During depolarisation, the influx of positively charged ions, such as sodium ions (Na+), into the cell exceeds the efflux of negatively charged ions, such as potassium ions (K+), causing the interior of the cell to become less negatively charged. This change in membrane potential triggers the opening of voltage-gated ion channels, leading to a cascade of events that result in the transmission of electrical impulses or signals along the cell membrane.

   In nerve cells, depolarisation is an essential step towards transmitting information from one neuron to another. It occurs when a sufficient stimulus, such as an action potential, causes the membrane potential to become less negative, enabling the propagation of an electrical signal along the nerve fiber. Depolarisation is a transient event, as it is rapidly followed by repolarisation, where the membrane potential is restored to its resting state.

   Moreover, depolarisation also plays a crucial role in muscle contractions. In skeletal and cardiac muscle fibers, the depolarisation of the cell membrane triggers the release of calcium ions, which initiate the contraction of muscle fibers.

   Overall, depolarisation is a fundamental process in various excitable tissues that allows for the transmission of electrical impulses, ultimately enabling the functioning of the nervous and muscular systems.

2. The act of depriving of polarity.

   Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.

Common Misspellings for DEPOLARISATION

• sepolarisation
• xepolarisation
• cepolarisation
• fepolarisation
• repolarisation
• eepolarisation
• dwpolarisation
• dspolarisation
• ddpolarisation
• drpolarisation
• d4polarisation
• d3polarisation
• deoolarisation
• delolarisation
• de-olarisation
• de0olarisation
• depilarisation
• depklarisation
• depllarisation

Etymology of DEPOLARISATION

The word "depolarisation" is derived from the combination of the prefix "de-" which means "reverse" or "remove", and the word "polarization".

The term "polarization" comes from the Latin word "polaris", which means "of or relating to the pole". In the context of depolarisation, it refers to a reversal or reduction in the electrical polarization of a cell or tissue.

So, essentially, "depolarisation" refers to the process of reversing or reducing polarization, especially in the context of electrical membrane potentials in nerve cells or muscle fibers.

Similar spelling word for DEPOLARISATION

• depolarization.

Plural form of DEPOLARISATION is DEPOLARISATIONS