How Nerves Communicate Within Your Body

MEDICAL ANIMATION TRANSCRIPT: A typical neuron consists of a cell body, plasma membrane extensions called dendrites, an elongated fiber known as an axon, and an axon hillock, the trigger zone that releases a nerve impulse. The axon hillock maintains an excitation limit, or threshold, which determines whether or not a neuron will generate a nerve impulse. A nerve impulse is an electrical signal conducted by a neuron, causing a response in another neuron or target cell. When a neuron is at rest, its membrane is polarized because there are more positive ions outside the cell and more negative ions inside the cell, which creates a charge difference across the membrane. Active transport mechanisms called sodium-potassium pumps carry more sodium and less potassium ions across the membrane to maintain this charged difference. Even in a resting neuron, there is the potential for the charged difference to create an electrical current. This is called a resting membrane potential. When an electrical current flows through a dendrite, this is called a local membrane potential. When a dendrite detects a stimulus, a sodium channel in its plasma membrane opens and lets sodium into the neuron. This influx of positive ions reverses the charge across a particular section of the membrane in a process called depolarization. To repolarize the membrane, potassium channels open and release potassium out of the neuron. Nearby, a sodium-potassium pump transports excess sodium amount and brings potassium in, which restores the resting membrane potential. The flow of reversing charges along the dendrite's membrane produces a wavelike electrical current toward the neuron's trigger zone. If the strength of the current meets or exceeds the threshold at the trigger zone, an electrical signal called an action potential or nerve impulse will occur. In a nerve impulse, the trigger zone sends an electrical signal down the axon toward the space between neurons called a synapse or to a target cell membrane.
#NerveImpulse #neurons #NervousSystem
ANM11048

[@nurayusif1739]

Cleared explanation/demonstration

[@cibeleanjos3051]

Thank you for video I'm studying nurse and I have pathology class

[@رومیناهمایرضوی]

سپاس از شما❤

[@davidcovington901]

At 0:53 the statement that "the membrane is polarized because there are more positive ions outside the cell and more negative ions inside the cell" is incorrect, and could cause physiology students to miss questions on exams. There are far more chloride ions outside the cell than inside, and, though most cytoplasmic proteins are negative, they do not do much to establish the Resting Membrane Potential of about -70 millivolts. It is the difference in potassium ion level that is the major determinant of the RMP - there is more potassium inside the axon than outside.

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Thank GOD for this creation

[@Iamlegend91]

Why?

[@seetheworld3839]

Atheist spottee​@@Iamlegend91

[@SignsWithinScience]

​​@@Iamlegend91 Because God created you and blessed you with so much

[@Iamlegend91]

@@SignsWithinScience How do you know that?

[@SignsWithinScience]

@@Iamlegend91 through His Revelations, the last one of which is the Glorious Qurʾān, and through indubitable rational, philosophical and historical evidence and scientific Signs pointing that they can't be brought into existence except by The One Whose Existence Is Eternal.

[@MohamedHassn-f7t]

سبحان الله الذى خلق فسوى

[@SabaAlshare]

I swear to god this video used to be silent and there is someone speaking

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Synes godt om 🐞🐞🐜🐞🐜🐞🐞

[@owaisakram9124]

❤❤❤

[@Game4ArtYT]

Thanks

[@GeneralNdembo-rf9mp]

Depolarization of neurons

[@Sohila.kz3hj]

We want translation in all languages❤

[@cameron6538]

this video covers ionotropic neural communication, search metabotropic neural signaling to learn more about the more complex types of signaling that don't directly result in an action potential, but alter cell dynamics in other ways such as phosphorylation of channel proteins or control of gene expression

[@alfinrd261]

exciting impressive

[@ms-kabiraj]

0:18 प्रणाम 🙏👍

[@ms-kabiraj]

0:57 Hello🙋‍♂️ everybody🙏

[@rssadh]

Life is electricity.

[@ms-kabiraj]

3:07 Thanks🌹 NMM

[@sentientfetus3894]

Our bodies produce electricity ⚡ we have water 💦 and need oxygen why doesn't any electrolysis happen in our bodies

[@kevinclifton8276]

The bio- electricity is just in few millivolts (mV). To split water molecules you'd require a voltage of few volts! Also these electrical impulses (action potential) are confined to neuronal membrane. It doesn't follow any arbitrary path! Also insulating material surrounding the axons called myelin prevent merging of impulses! Otherwise your whole neuro communication would collapse!

[@animalrecapped]

Becoz few volts of electricity can damage your cells

[@teevee7678]

not quite

[@tejaswineemore8459]

How many nostrils are there in the body?

[@LucidDreamer54321]

None. They are on the surface of the body.