Neuron 4 regions: – Cell body Contains nucleus Metabolic center – Presynaptic terminals – Dentrites Receive incoming signals from other nerve cells – Axon.

Slides:



Advertisements
Similar presentations
Topic Nerves.
Advertisements

Mean = 75.1 sd = 12.4 range =
LECTURE 12 Graded Potentials Action Potential Generation
How and why do organisms respond to changes in their environment? Can you list what is required for a coordinated response? What makes up the CNS? Can.
بسم اللة الرحمن الرحيم Muscle and neuron as excitable tissue.
Figure 11.3 Neuroglia. © 2014 Pearson Education, Inc. Capillary Neuron
The Nervous System.
Stimuli and Response-Notes
CHAPTER 48 NERVOUS SYSTEMS Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings Section A: An Overview Of Nervous Systems 1. Nervous.
The Nervous System AP Biology Unit 6 Branches of the Nervous System There are 2 main branches of the nervous system Central Nervous System –Brain –Spinal.
Motor Neuron By Katelynn Morris. Structures of the Motor Neuron Cell body (biosynthetic center) Nucleus Nucleolus Nissl bodies is used to localize the.
AP Biology Nervous Systems Part 1.
THE NERVOUS SYSTEM  NERVOUS SYSTEM: Receives & relays info. About activities w/in the body & monitors & responds to internal & external changes.  NEURONS:
Human Anatomy & Physiology NERVOUS SYSTEM Biology – Chapter 35 1.
MEMBRANE POTENTIAL DR. ZAHOOR ALI SHAIKH Lecture
Chapter 48.  Short distance communication ◦ Synapses between cells  Neurotransmitters.
Essentials of Human Anatomy & Physiology Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Seventh Edition Elaine N. Marieb Chapter.
The Nervous System The nervous system controls and coordinates functions throughout the body and responds to internal and external stimuli.
35.2.  Controls and coordinates functions throughout the body.  Responds to external and internal messages.  The body’s  communication system.
Study of the parts & functions of neurons. WHAT A NEURON LOOKS LIKE.
 Identify the principle parts of the nervous system  Describe the cells that make up the nervous system  Describe what starts and stops a nerve impulse.
The Nervous System. Divisions of the Nervous System Nervous System Central NSPeripheral NS Afferent Efferent Somatic Autonomic Sympathetic Parasympathetic.
PHYSIOLOGY: HUMAN BODY SYSTEMS. Homeostasis “Keeping things in balance” process by which organisms keep internal conditions relatively constant despite.
Neuron Structure and Function. Nervous System  Nervous system is composed of specialized cells called neurons.  Neurons have long “arms” called axons.
Nervous System Introduction Biology 2121 Chapter 11.
Nervous System Structure and Function Pt 1. Nervous System Function The nervous system controls and coordinates functions throughout the body, and responds.
Neurons, Synapses, and Signaling
P. Ch 48 – Nervous System pt 1.
Control Systems (PB Lecture 17 – Spring 2008 Althoff Ch. 34) Nervous system.
Nervous Tissue Chapter 12. Nervous System Controls and integrates all body activities Basic functions: Sense change Interpret and remember change React.
Unit 1B: Nerve Impulses and Synapses. Nerve Impulse A neuron’s job is to transmit a message to a muscle, gland, or another neuron The message travels.
Electrical Properties of Nerve Cells The resting membrane potential.
HOW THE NERVOUS SYSTEM WORKS Chapter 6 Section 1 Pages
Nervous System IB Biology. Nervous System In order to survive and reproduce an organism must respond rapidly and appropriately to environmental stimuli.
8.2 Structures and Processes of the Nervous System
6.5 Neurons & Synapses. Structure of the Human Nervous System Composed of cells called neurons that carry rapid electrical impulses.
NEURON ANATOMY. NEURON Dendrites: (dend = tree) cell processes that carry electric impulses from an incoming nerve to a cell body. Hundreds per neuron.
Parts of the neuron. The Parts of the Neuron 1. Dendrites - receive incoming messages to the nerve cell - resemble tree branches.
As the stimulus grows stronger, the neuron’s cell body triggers the neuron to initiate an impulse. This impulse is called an ____________.
Sport Books Publisher1 Information Processing in Motor Learning Chapter 10.
Introduction to Cognitive Neuroscience Topic 2: The Nervous System.
Nerve Impulses.
2 Functional Properties of Neurons 1. Irritability Ability to respond to stimuli 2. Conductivity Ability to transmit an impulse.
Our electrochemical controls
AP Biology Nervous Systems Part 1.
35-2 The Nervous System Pg Introduction 1. The Nervous system controls and manages functions in response to internal and external stimuli.
Nerve Impulse Generation & Conduction
PHYSIOLOGY OF THE NERVOUS SYSTEM Neurons are IRRITABLE Ability to respond to a stimulus! (What’s a stimulus?)
Chapter 35-2 Nervous System.
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.
THE NERVOUS SYSTEM 35-2 BIO 1004 Flora. NERVOUS SYSTEM  Nervous system – controls and coordinates functions throughout the body and responds to internal.
Objectives 31.1 The Neuron -Identify the functions of the nervous system. -Describe the function of neurons. -Describe how a nerve impulse is transmitted.
Aim: What are the parts of a reflex arc? I. Reflex – involuntary response to a stimulus. A. Stimulus – any change in the environment that causes a response.
What you should know The parts of the nerve What an action potential is How nerve cells are insulated and the function of this How nerve cells communicate.
Chapter 49 Table of Contents Section 1 Neurons and Nerve Impulses.
Afferent Nerves Efferent Nerves cell body: cell body: central part of cell; contains the nucleus axon: axon: long slender extension from cell body; used.
Nervous System. The nervous system is broken down into two major parts:
Electrical Properties of the Nervous System Lundy-Ekman, Chapter 2 D. Allen, Ph.D.
Nervous System
Functional Properties of Neurons
NERVE CELLS by Grace Minter.
35-2 The Nervous System Pg. 897.
NOTES - UNIT 5 part 2: Action Potential: Conducting an Impulse
Nerve Cells -Nerve cells are also known as neurons and they are the most basic part of the nervous system -Neurons carry information through the nervous.
2 Functional Properties of Neurons
The Control Systems of the Body
Information Processing in Motor Learning
10.6: Cell Membrane Potential
Action Potentials.
IL CERVELLO.
Presentation transcript:

Neuron 4 regions: – Cell body Contains nucleus Metabolic center – Presynaptic terminals – Dentrites Receive incoming signals from other nerve cells – Axon Transports signals away to other neurons

What is an Action Potential? Defn. Electrical signal conveyed down an axon What causes it? – An environmental stimulus (ex. Light, pressure, odor, mechanical contact, etc.) These stimuli cause the axon hillock (start of the axon) to create an action potential The action potential continues to the end of the axon

Action Potential Properties Travel small or large distances (.1mm-3m) Rapid and transient (duration of about 1ms) Constant amplitude (100mV) All or none nerve impulse Travels in one direction (principle of dynamic polarization) (Dominos display)

Action Potential Overview

How does the action potential impact the neuromuscular junction?

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2025 SlidePlayer.com. Inc. All rights reserved.