Subscribe to get Updates
  • Login
  • Home
    • Home – Layout 1
    • Home – Layout 2
    • Home – Layout 3
    • Home – Layout 4
    • Home – Layout 5
  • Health
    • All
    • 3D Medical Videos
    • AIIMS PG Questions
    • Anaesthesia E-book
    • Anatomy Books
    • Anatomy Mnemonics
    • Anatomy Slides
    • Anesthesia Slides
    • ASON Webinar Videos
    • Ayurved Medicine
    • Biochemistry Books
    • Biochemistry Slides
    • Bone and Joint Articles
    • Dental Jokes
    • Dental Slides
    • Disease
    • Downloads
    • Embryology Slides
    • Endocrine Mnemonics
    • ENDOSCOPIC SECTION
    • Exam stuffs
    • FCPS Exam Questions
    • Featured
    • Featured Posts
    • Fellowships @ Scholarships
    • Fitness
    • Guidelines
    • Gyne & Obs Slides
    • Head And Neck
    • Health
    • Health Articles
    • Health tips
    • Internal Medicine Mnemonics
    • Internal Medicine Slides
    • Lifestyle
    • MBBS Entrance Exam Old Questions
    • MBBS Exam Questions
    • MBBS Syllabus
    • MCQ Practice
    • MDMS Books
    • MDMS Syllabus
    • Medical Conferences
    • Medical Documentary
    • Medical Ebooks
    • Medical Episodes
    • Medical Jokes
    • Medical Journals & Researches
    • Medical Lectures Videos
    • Medical Movies
    • Medical Slides
    • Medical Study
    • Medical Study Notes
    • Medical Videos
    • Medicine Books
    • Medicospace Blog
    • Microbiology Books
    • Microbiology Slides
    • Mnemonics
    • Mobile Medical Apps
    • NCLEX RN Questions
    • Nepal Health documents
    • Nepal Health News
    • Nepal Health Programs
    • Nepal hospitals
    • Nepal Journals
    • Nepal Medical Colleges
    • Nepal Medical events
    • Nepal Nursing Notices
    • Neurology Mnemonics
    • Neurology Slides
    • NMC Exam Notice
    • NMCLE Questions
    • Notice
    • NURSES Stuffs
    • Nursing Books online
    • Nursing Exam Questions
    • Nursing Lecture Videos
    • Nursing Recent Advances
    • Nursing Syllabus
    • Nutrition
    • Open Surgery Videos
    • Orthopedic Books
    • Orthopedic Mnemonics
    • Orthopedic Slides
    • Orthopedic Videos
    • OSCE Guide video
    • Others
    • Pathology Mnemonics
    • Pathology Slides
    • Pediatric Slide
    • PG Entrance Exam Questions
    • PGI Questions
    • Pharmacology Ebooks
    • Pharmacology SLides
    • Physical examination Video
    • Physiology ebook
    • Physiology Mnemonics
    • Physiology Slides
    • Physiotherapy Job
    • PMDC Exam
    • Procedure Video
    • Question Collections
    • Radiographer Job
    • Radiology Books
    • Radiology Slides
    • Recent Advance Books
    • Research Study
    • Results
    • Robotic Surgery
    • Software
    • Spot diagnosis
    • Suregery Procedure Video
    • Surgery Ebooks
    • Surgery Mnemonics
    • Surgery skills video
    • Surgery SLides
    • Surgery Steps
    • Surgical Points To Remember
    • Syllabus
    • Traditional Medicine Recent Advance
    • Uncategorized
    • Upper Limb Mnemonics
    • Uro-Surgery
    • Urology Slides
    • Usmle ebooks
    • USMLE Questions
    • USMLE Videos
    • Weight Loss
    Informed Consent in URO: Transurethral Resection of the Prostate

    Informed Consent in URO: Transurethral Resection of the Prostate

    Recent Advances in Surgery-Updates 30

    Recent Advances in Surgery-Updates 30

    Sleeve Gastrectomy  Optimal Surgical Treatment for Type 2 Diabetes: or Gastric Bypass

    Sleeve Gastrectomy Optimal Surgical Treatment for Type 2 Diabetes: or Gastric Bypass

    A Trainer Reveals the Best Exercises For a Stronger, Toned Butt

    Unused Dental Surgery Prescriptions May Help Fuel Opioid Epidemic

    Breast Thermography: Technology, Benefits, and Cancer Signs

    Researchers Examine Impact of Soda on Children’s Dental Health

  • Weight Loss

    How To Lose 10 Pounds Even If You Hate Vegetables

    A Trainer Answers: What’s the Best Workout For Losing Weight?

    Drinking This Kind of Tea Could Help Shed Those Last Few Pounds

    This Easy Cardio Swap Will Help You Train for A Half Marathon

    5 Must-Follow Rules If You Want to Get Strong

    Load Up on Shrooms With These Healthy Recipes

    6 Ways to Burn More Calories Doing Bodyweight Exercises

  • Disease

    Breast Thermography: Technology, Benefits, and Cancer Signs

    Digital Health Intervention Does Not Lower Heart Attack Risk

    What Your Legs Could Be Telling You About Your Heart Health

    Causes of psoriatic arthritis: Triggers and risk factors

    What is Salicylic acid and why should I use it on my skin?

    Drinking coffee could protect against some types of cancer

    10 Things Every Woman Should Know About Yeast Infections

  • Fitness

    A Trainer Reveals the Best Exercises For a Stronger, Toned Butt

    A Trainer Answers: What’s the Best Workout For Losing Weight?

    This Easy Cardio Swap Will Help You Train for A Half Marathon

    5 Must-Follow Rules If You Want to Get Strong

    Can This Weight-Loss Pill Really Help You Lose Weight?

    6 Ways to Burn More Calories Doing Bodyweight Exercises

    10 Fat-Burning Moves That Will Help You Lose Weight

  • Nutrition

    How To Lose 10 Pounds Even If You Hate Vegetables

    These Foods to Absolutely Avoid If You Want Clear, Glowing Skin

    Drinking This Kind of Tea Could Help Shed Those Last Few Pounds

    What bleeding gums mean for people with diabetes

    What is Salicylic acid and why should I use it on my skin?

    Drinking coffee could protect against some types of cancer

    Can This Weight-Loss Pill Really Help You Lose Weight?

  • Lifestyle

    A Trainer Reveals the Best Exercises For a Stronger, Toned Butt

    Unused Dental Surgery Prescriptions May Help Fuel Opioid Epidemic

    Researchers Examine Impact of Soda on Children’s Dental Health

    Dental Care for Kids: When Should Your Child Start Going to the Dentist?

    How To Lose 10 Pounds Even If You Hate Vegetables

    A Trainer Answers: What’s the Best Workout For Losing Weight?

    These Foods to Absolutely Avoid If You Want Clear, Glowing Skin

No Result
View All Result
MedicoSpace
  • Home
    • Home – Layout 1
    • Home – Layout 2
    • Home – Layout 3
    • Home – Layout 4
    • Home – Layout 5
  • Health
    • All
    • 3D Medical Videos
    • AIIMS PG Questions
    • Anaesthesia E-book
    • Anatomy Books
    • Anatomy Mnemonics
    • Anatomy Slides
    • Anesthesia Slides
    • ASON Webinar Videos
    • Ayurved Medicine
    • Biochemistry Books
    • Biochemistry Slides
    • Bone and Joint Articles
    • Dental Jokes
    • Dental Slides
    • Disease
    • Downloads
    • Embryology Slides
    • Endocrine Mnemonics
    • ENDOSCOPIC SECTION
    • Exam stuffs
    • FCPS Exam Questions
    • Featured
    • Featured Posts
    • Fellowships @ Scholarships
    • Fitness
    • Guidelines
    • Gyne & Obs Slides
    • Head And Neck
    • Health
    • Health Articles
    • Health tips
    • Internal Medicine Mnemonics
    • Internal Medicine Slides
    • Lifestyle
    • MBBS Entrance Exam Old Questions
    • MBBS Exam Questions
    • MBBS Syllabus
    • MCQ Practice
    • MDMS Books
    • MDMS Syllabus
    • Medical Conferences
    • Medical Documentary
    • Medical Ebooks
    • Medical Episodes
    • Medical Jokes
    • Medical Journals & Researches
    • Medical Lectures Videos
    • Medical Movies
    • Medical Slides
    • Medical Study
    • Medical Study Notes
    • Medical Videos
    • Medicine Books
    • Medicospace Blog
    • Microbiology Books
    • Microbiology Slides
    • Mnemonics
    • Mobile Medical Apps
    • NCLEX RN Questions
    • Nepal Health documents
    • Nepal Health News
    • Nepal Health Programs
    • Nepal hospitals
    • Nepal Journals
    • Nepal Medical Colleges
    • Nepal Medical events
    • Nepal Nursing Notices
    • Neurology Mnemonics
    • Neurology Slides
    • NMC Exam Notice
    • NMCLE Questions
    • Notice
    • NURSES Stuffs
    • Nursing Books online
    • Nursing Exam Questions
    • Nursing Lecture Videos
    • Nursing Recent Advances
    • Nursing Syllabus
    • Nutrition
    • Open Surgery Videos
    • Orthopedic Books
    • Orthopedic Mnemonics
    • Orthopedic Slides
    • Orthopedic Videos
    • OSCE Guide video
    • Others
    • Pathology Mnemonics
    • Pathology Slides
    • Pediatric Slide
    • PG Entrance Exam Questions
    • PGI Questions
    • Pharmacology Ebooks
    • Pharmacology SLides
    • Physical examination Video
    • Physiology ebook
    • Physiology Mnemonics
    • Physiology Slides
    • Physiotherapy Job
    • PMDC Exam
    • Procedure Video
    • Question Collections
    • Radiographer Job
    • Radiology Books
    • Radiology Slides
    • Recent Advance Books
    • Research Study
    • Results
    • Robotic Surgery
    • Software
    • Spot diagnosis
    • Suregery Procedure Video
    • Surgery Ebooks
    • Surgery Mnemonics
    • Surgery skills video
    • Surgery SLides
    • Surgery Steps
    • Surgical Points To Remember
    • Syllabus
    • Traditional Medicine Recent Advance
    • Uncategorized
    • Upper Limb Mnemonics
    • Uro-Surgery
    • Urology Slides
    • Usmle ebooks
    • USMLE Questions
    • USMLE Videos
    • Weight Loss
    Informed Consent in URO: Transurethral Resection of the Prostate

    Informed Consent in URO: Transurethral Resection of the Prostate

    Recent Advances in Surgery-Updates 30

    Recent Advances in Surgery-Updates 30

    Sleeve Gastrectomy  Optimal Surgical Treatment for Type 2 Diabetes: or Gastric Bypass

    Sleeve Gastrectomy Optimal Surgical Treatment for Type 2 Diabetes: or Gastric Bypass

    A Trainer Reveals the Best Exercises For a Stronger, Toned Butt

    Unused Dental Surgery Prescriptions May Help Fuel Opioid Epidemic

    Breast Thermography: Technology, Benefits, and Cancer Signs

    Researchers Examine Impact of Soda on Children’s Dental Health

  • Weight Loss

    How To Lose 10 Pounds Even If You Hate Vegetables

    A Trainer Answers: What’s the Best Workout For Losing Weight?

    Drinking This Kind of Tea Could Help Shed Those Last Few Pounds

    This Easy Cardio Swap Will Help You Train for A Half Marathon

    5 Must-Follow Rules If You Want to Get Strong

    Load Up on Shrooms With These Healthy Recipes

    6 Ways to Burn More Calories Doing Bodyweight Exercises

  • Disease

    Breast Thermography: Technology, Benefits, and Cancer Signs

    Digital Health Intervention Does Not Lower Heart Attack Risk

    What Your Legs Could Be Telling You About Your Heart Health

    Causes of psoriatic arthritis: Triggers and risk factors

    What is Salicylic acid and why should I use it on my skin?

    Drinking coffee could protect against some types of cancer

    10 Things Every Woman Should Know About Yeast Infections

  • Fitness

    A Trainer Reveals the Best Exercises For a Stronger, Toned Butt

    A Trainer Answers: What’s the Best Workout For Losing Weight?

    This Easy Cardio Swap Will Help You Train for A Half Marathon

    5 Must-Follow Rules If You Want to Get Strong

    Can This Weight-Loss Pill Really Help You Lose Weight?

    6 Ways to Burn More Calories Doing Bodyweight Exercises

    10 Fat-Burning Moves That Will Help You Lose Weight

  • Nutrition

    How To Lose 10 Pounds Even If You Hate Vegetables

    These Foods to Absolutely Avoid If You Want Clear, Glowing Skin

    Drinking This Kind of Tea Could Help Shed Those Last Few Pounds

    What bleeding gums mean for people with diabetes

    What is Salicylic acid and why should I use it on my skin?

    Drinking coffee could protect against some types of cancer

    Can This Weight-Loss Pill Really Help You Lose Weight?

  • Lifestyle

    A Trainer Reveals the Best Exercises For a Stronger, Toned Butt

    Unused Dental Surgery Prescriptions May Help Fuel Opioid Epidemic

    Researchers Examine Impact of Soda on Children’s Dental Health

    Dental Care for Kids: When Should Your Child Start Going to the Dentist?

    How To Lose 10 Pounds Even If You Hate Vegetables

    A Trainer Answers: What’s the Best Workout For Losing Weight?

    These Foods to Absolutely Avoid If You Want Clear, Glowing Skin

No Result
View All Result
HealthNews
No Result
View All Result
Home Medical Study Medical Study Notes

Nerve Cell Physiology Study Notes

by mediconepal
April 6, 2020
in Medical Study Notes
0
0
SHARES
1
VIEWS
Share on FacebookShare on Twitter

RelatedPosts

Liver transplantation – acute liver failure – end-stage liver disease

High Yields in Orthopedics |medical study notes

115 Medical one liners for medical exam

Nerve Cell Physiology study notes for Exam Point of View. 

 

Describe the basic components of a nerve cell
  • Dendrites – receive and integrate input
  • Soma/Cell Body – location of nucleus
  • Axon – carrier of action potential to presynaptic terminal
  • Axon hillock – demyelinated, where action potentials are generated
  • Myelin sheath – insulates axon and aids action potential conduction
  • Nodes of Ranvier – boosting stations for action potentials between myelin sheaths
  • Presynaptic terminal – end of axon that releases neurotransmitters to pass a signal to another neuron
Describe the nature of ionic permeability of the cell membrane The lipid bilayer is impermeable to ions. Ion channels allow ions to cross the membrane. Ion pumps use energy to maintain the concentration gradients across the membrane.
Explain how the resting membrane potential is generated Two forces work on ions: passive diffusion (moving down a concentration gradient) and electrostatic (repelling like forces). The electrostatic force generated by the separation of charged ions across the membrane prevents the complete diffusion of ions down their concentration gradients via ion channels. The net flow of ions across a cell membrane will be zero when the electrostatic and diffusion forces reach an equilibrium. The resting potential of a cell membrane is determined by the concentrations of ions present and their relative permeabilities across the membrane.
Explain how the action potential is generated Applied current or excitatory input — voltage-gated Na+ channels open and Na+ rushes into cell — cell membrane is depolarized — Na+ channels begin to close as slower voltage-gated K+ channels open — cell membrane repolarizes and “undershoots” to cause an afterhyperpolarization — K+ channels close and membrane returns to resting potential
Explain the cause of the “refractory period” following action potential generation and discuss its functional significance The Na+ channels have an inactive state following activation and cannot generate another action potential. Also, the opening of K+ channels hyperpolarizes the cell so that the membrane is unable to generate action potentials of equal strength. The refractory period limits how soon one action potential can be followed by another.
Explain how membrane potentials spread passively In the absence of an action potential and voltage-gated Na+ channels, an injected current will travel passively down the axon. The magnitude of the current pulse decays exponentially, like a “leaky hose.”
Explain how action potentials propagate actively Depolarization opens more Na+ channels farther down the axon, which causes further depolarization in a positive feedback cycle.
Explain why myelination allows for faster propagation of action potentials and how demyelination affects action potential conduction Myelination increases the membrane resistance, which prevents leakage of ions, makes the length constant of the axon longer, and current can spread farther before decay. Myelination decreases the membrane channels’ capacitance (the resistance to ion flow) , which decreases the time constant, and the membrane can depolarize faster.

Demyelination increases the membrane capacitance, requiring more local current to depolarize for an action potential. The membrane resistance is lower, meaning a shorter length constant and limited spread of the local current. Action potentials are slowed or blocked in diseases of demyelination.

Tags: PG exam notesusmle study notes
Advertisement Banner
Previous Post

List of Nepalese Pharmaceutical Industries Producing Modern Medicines

Next Post

Details on Decoding the Genome of SARS-CoV-2 virus

mediconepal

Related Posts

Liver transplantation – acute liver failure – end-stage liver disease
Medical Study Notes

Liver transplantation – acute liver failure – end-stage liver disease

April 5, 2022
High Yields in Orthopedics |medical study notes
Exam stuffs

High Yields in Orthopedics |medical study notes

October 21, 2020
Exam stuffs

115 Medical one liners for medical exam

September 5, 2020
How to take incisional Biopsy correctly
Medical Study Notes

How to take incisional Biopsy correctly ?

September 5, 2020
Management And treatment of bells palsy
Health Articles

Effective Management And treatment of bells palsy

September 4, 2020
Criterias and Classifications for medical exams
Medical Study Notes

Criterias and Classifications for medical exams | Study Notes

September 1, 2020
Load More
Next Post

Details on Decoding the Genome of SARS-CoV-2 virus

Discussion about this post

Recommended

Orthopedic Lecture Notes download part 2

8 years ago

IOM PG Entrance Exam Result online

7 years ago

Don't Miss

Informed Consent in URO: Transurethral Resection of the Prostate

Informed Consent in URO: Transurethral Resection of the Prostate

June 15, 2022
Recent Advances in Surgery-Updates 30

Recent Advances in Surgery-Updates 30

June 15, 2022
Sleeve Gastrectomy  Optimal Surgical Treatment for Type 2 Diabetes: or Gastric Bypass

Sleeve Gastrectomy Optimal Surgical Treatment for Type 2 Diabetes: or Gastric Bypass

June 15, 2022

A Trainer Reveals the Best Exercises For a Stronger, Toned Butt

May 15, 2022
MedicoSpace

We bring you the best Premium WordPress Themes that perfect for news, magazine, personal blog, etc. Check our landing page for details.

Follow us

Recent News

Informed Consent in URO: Transurethral Resection of the Prostate

Informed Consent in URO: Transurethral Resection of the Prostate

June 15, 2022
Recent Advances in Surgery-Updates 30

Recent Advances in Surgery-Updates 30

June 15, 2022

Categories

  • About
  • Advertise
  • Privacy & Policy
  • Contact

Subscribe MedicoSpace.com - Medical & Health Blog © 2009--2021

No Result
View All Result
  • Home
    • Home – Layout 1
    • Home – Layout 2
    • Home – Layout 3
    • Home – Layout 4
    • Home – Layout 5
  • Health
  • Weight Loss
  • Disease
  • Fitness
  • Nutrition
  • Lifestyle

Subscribe MedicoSpace.com - Medical & Health Blog © 2009--2021

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In