NERVE IMPULSE.

Slides:

Advertisements

Similar presentations

Passage of an action potential

Advertisements

The Action Potential Objective: To understand how neurones conduct impulses from one part of the body to another. What is this part of the nervous system.

Propagation of the Action Potential The Central Dogma Of Excitable Tissues.

HOW MESSAGES ARE SENT.  It is a message travelling down a neuron  The message comes from:  Another neuron or  A sensory receptor  A nerve impulse.

THE NERVOUS SYSTEM  NERVOUS SYSTEM: Receives & relays info. About activities w/in the body & monitors & responds to internal & external changes.  NEURONS:

Nerve Impulses Sec 17.1 Pg Memory Makers from Last Class…  Fingerlike Extensions  Outskirts and Organs Please PNS  Conductor Tubes  Go between.

Book Slam. Nervous System Basics: Neurons Ch. 40.

The Nervous System. Divisions of the Nervous System Nervous System Central NSPeripheral NS Afferent Efferent Somatic Autonomic Sympathetic Parasympathetic.

Nerve Impulse. A nerve impulse is an impulse from another nerve or a stimulus from a nerve receptor. A nerve impulse causes:  The permeability of the.

Nerve Impulse. A nerve impulse is an impulse from another nerve or a stimulus from a nerve receptor. A nerve impulse causes:  The permeability of the.

Nervous System Structure and Function Pt 1. Nervous System Function The nervous system controls and coordinates functions throughout the body, and responds.

Nervous System & Neurons

Quick Review What’s another name for neurons? Can you name the parts of a neuron?

Nerve Impulse Every time you move a muscle & every time you think a thought, your nerve cells are hard at work. They are processing information: receiving.

Structures and Processes of the Nervous System – Part 2

2 Functional Properties of Neurons 1. Irritability Ability to respond to stimuli 2. Conductivity Ability to transmit an impulse.

Neuron Structure and Function. Nervous System  Nervous system is composed of specialized cells called neurons.  Neurons have long “arms” called axons.

Structure of a nerve Nerves and Nerve impulses “Nerve impulse: a self-propagating wave of electrical disturbance which travels along the surface of a.

NERVE IMPULSE TRANSMISSION  nerve cells are like no other cell in the body because they possess an electrical charge  the axon of a neuron has a cell.

Quick Membrane Review 1. 2 Interfere with the neurons ability to transfer electrical impulses Over loads nervous system volts Taser Tasers.

Ch. 12. Objectives Describe the factors that maintain a resting membrane potential. List the sequence of events that generates an action potential.

Nerve Impulses. Neuron Physiology Action Potentials- nerve impulses which are sent by a change in electrical charge in the cell membrane. Depends on ions.

17-1 Part I - The Nervous System Function: To coordinate the actions of your body To ensure effective behavior To maintain the internal environment within.

Action Potentials. Membrane Potential Electrical charge inside a neuron is different than interstitial space Resting membrane potential (RMP) is -70mV.

Neurones & the Action Potential Objective: To understand how neurones conduct impulses from one part of the body to another. Write down anything you can.

Neurones & the Action Potential Neurones conduct impulses from one part of the body to another.

Nervous System Function

AP Biology Nervous Systems Part 2. Animation 7Yk 7Yk.

Axons and Nerve Impulses  Axons end in axonal terminals  Axonal terminals contain vesicles with neurotransmitters which are biological messenger molecules.

Neuron Poster; Cockroach Flow Chart w/ Rubric Attached Due Today

Nervous System Notes Part 4

Reflex: An automatic, stereotyped movement produced as the direct result of a stimulus.

6.5 – Neurones and Synapses

Action Potential Every time you move a muscle & every time you think a thought, your nerve cells are hard at work. They are processing information: receiving.

Do what you can, with what you have, where you are.

Action Potential.

Unit 2 Notes: Nerve Impulses

6.5 Neurons & Synapses.

ACTION POTENTIALS By: Heidi Hisrich.

ACTION POTENTIALS.

Nerve Impulse Conduction

Nervous Impulse Action Potential.

Nerve Impulses.

The Nerve Impulse.

The Nervous System chapter 37

6.5 Neurons & Synapses.

Cell Communication.

Nerve Impulses.

2 Functional Properties of Neurons

Nervous System “The Neuron”

Nerve Cell Structure and Function

Cell Communication: Neuron.

Biology Powerpoint #3 Unit 8 – Chapter 35

Today you will: Describe a resting membrane

AP Biology Nervous Systems Part 2.

6.5 Neurons & Synapses.

Neuron Cell Body Location

Nerve Impulses.

Created By: Heidi Hisrich Modified by: K. Hoffman 2018

How the Plasma membrane (PM) Prepares to Send an Impulse

Neurons & the Action Potential

Biology 12 Neuron Function.

AP Biology Nervous Systems Part 2.

Structure and Physiology of Neurons

Nerve Impulse (pp ).

Saltatory conduction in nerve impulses

Unit 2 Notes: Nerve Impulses

Presentation transcript:

NERVE IMPULSE

An electric message sent on neurons. 4 stages of sending message. NERVE IMPULSE An electric message sent on neurons. 4 stages of sending message.

STEP 1 Resting potential: -70 mV (millivolts) difference between inside and outside. Na+ ions outside K+ and Proteins inside.

Action potential: Membrane stimulated Na+ gates open (come in) STEP 2 Action potential: Membrane stimulated Na+ gates open (come in) Depolarization (+30 mV)

K+ ions gates open (go out) Returns to -70 mV Step 3 Repolarization: K+ ions gates open (go out) Returns to -70 mV

Na/K pumps use ATP (energy) to pump back to original places. Step 4 Recovery: Na/K pumps use ATP (energy) to pump back to original places. Shuts down until complete!

The nerve impulse travels like a wave. 2 different methods. CONDUCTION The nerve impulse travels like a wave. 2 different methods.

Myelinated: impulse jumps from node to node. FASTER (100-200m/sec) CONDUCTION Myelinated: impulse jumps from node to node. FASTER (100-200m/sec)

UN-myelinated: impulse goes from point to point. SLOWER (1m/sec) CONDUCTION UN-myelinated: impulse goes from point to point. SLOWER (1m/sec)

Look at your textbook example on page: 223