Nerve Physiology : Structure and Types of Neurons, Blood brain barrier, Resting membrane potential

📌𝗙𝗼𝗿 𝗡𝗼𝘁𝗲𝘀 𝗢𝗳 𝗧𝗵𝗶𝘀 𝗦𝗲𝘀𝘀𝗶𝗼𝗻 𝗝𝗼𝗶𝗻 𝗺𝘆 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗰𝗵𝗮𝗻𝗻𝗲𝗹 𝗵𝗲𝗿𝗲:-​ telegram.me/bh...
📌 𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:- / drgbhanuprakash
📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- linktr.ee/DrGB...
Nerve Physiology : Structure and Types of Neurons, Blood brain barrier, Resting membrane potential
Structure and Types of Neurons
Structure of a Neuron
_____________________
Cell Body (Soma): Contains the nucleus and essential organelles.
Dendrites: Branch-like extensions that receive signals from other neurons.
Axon: Long projection that transmits signals to other neurons or muscles.
Myelin Sheath: Fatty insulation that increases signal transmission speed.
Types of Neurons
__________________
Sensory Neurons: Transmit sensory information from receptors to the CNS.
Motor Neurons: Transmit motor information from the CNS to effectors (muscles, glands).
Interneurons: Located within the CNS and connect sensory and motor neurons.
Blood-Brain Barrier (BBB)
_________________________
Structure and Composition: Made of tight junctions between endothelial cells of cerebral capillaries.
· Astrocyte foot processes reinforce the barrier.
Function
· Protects the brain from harmful substances in the blood.
· Regulates transport of nutrients and waste products.
· Blocks many drugs, bacteria, and large molecules.
Clinical Relevance: Alterations or breakdown of the BBB can lead to neurological disorders.
Resting Membrane Potential (RMP)
___________________________________
Definition: The electric potential across the cell membrane at rest, typically -70mV in neurons.
Mechanism
· Sodium-Potassium Pump (Na+/K+ Pump):
Pumps 3 Na+ out and 2 K+ in, creating a concentration gradient.
Requires ATP for energy.
· Potassium Leak Channels:
Allow K+ to flow out of the cell, following the concentration gradient.
Contributes to the negative inside relative to outside.
· Sodium Leak Channels:
Less permeable to Na+ than to K+, but some Na+ does leak into the cell.
· Balance of Forces:
The concentration gradient pulls K+ out and Na+ in.
The electrical gradient opposes this movement.
At rest, these forces are in equilibrium.
Clinical Relevance: Understanding RMP is crucial for understanding nerve impulse propagation, muscle contractions, and various neurological disorders.
#fmge #fmgevideos #rapidrevisionfmge #fmgejan2023 #mbbslectures #nationalexitexam #nationalexittest #neetpg #usmlepreparation #usmlestep1 #fmge #usmle #drgbhanuprakash #medicalstudents #medicalstudent #medicalcollege #neetpg2023 #usmleprep #usmlevideos #usmlestep1videos #medicalstudents #neetpgvideos #nervephysiology #rmp #restingmembranepotential #bloodbrainbarrier #neuron #neurons #neurontypes

[@qamarraza5594]

I can't tell in word's what a great work this channel is doing.. now i can really believe that education is for all, not only for wealthy...

[@Goraksyabibek]

He is all-rounder,teaches everything very nicely.

[@snehapurshwani9337]

Amazing 👏 what a lecture !❤❤ Each n Every topic deeply covered and well explained (concerning 1st yr students )
Thankyou so much sir ❤❤❤
Sir ,Please please continue this series 🙏 🙏🙏🙏

[@doctorbhanuprakash]

Most welcome 😊

[@muskankauskik]

Too good ....what a view to present concept ....thanks sir

[@doctorbhanuprakash]

Most welcome

[@nasimuddinahmed9214]

Dr Teeja wonderful teaching

[@mohammadqaisaruddin2623]

Praising u will be showing candle to the sun.

[@sanyammathur3190]

Amazing lecture ❤

[@Devilkhan-ut8qg]

I am from pakistan what a wonderful explanation

[@dr.uttamkumardawn5887]

Fantastic and very helpful lecture

[@doctorbhanuprakash]

Glad it was helpful!

[@Sakshi472]

sir you are nice teaching please continue the subject

[@doctorbhanuprakash]

Thank you, I will

[@olineeducation]

Sir i like your classes very much.please sir teach us complete physiology

[@doctorbhanuprakash]

We will

[@subhashkumar-je9ey]

Thanx sir ❤❤.

[@moonrozario8899]

yes

[@katlakuntasravanthi]

Hi sir

[@uokay9428]

25:00

[@3xitalian]

🙏🙏🙏

[@gauravpatidar2003]

❤❤

[@IdriZabdi]

Sir can I get this note please

[@solankeshivam1918]

Why impulse is travelling from axon terminal to cell body from receptor, shouldn't the cell body take the impulse and travel through axon to axon terminal

[@talenteducation405]

It's bipolar neuron I think

[@Dr.RJ27]

Video will start from 24.12 min

[@sakthinathan9260]

Thanks bro

[@sakthinathan9260]

25:30

[@qamarraza5594]

I can't tell in word's what a great work this channel is doing.. now i can really believe that education is for all, not only for wealthy...

[@qamarraza5594]

I can't tell in word's what a great work this channel is doing.. now i can really believe that education is for all, not only for wealthy...

[@Sci_hacks]

Hey man. have you already started studying 3 months back