Nervous Tissue Li DongMei. Central nervous system (CNS) Central nervous system (CNS) Peripheral nervous system (PNS) Peripheral nervous system (PNS)

Slides:



Advertisements
Similar presentations
Histology of Nervous Tissue
Advertisements

Chapter # - Chapter Title
Topic Nerves.
Nervous Tissue.
Lecture packet 9 Reading: Chapter 7
Fundamentals of the Nervous System and Nervous Tissue
THE NERVOUS SYSTEM.
The Nervous system has three major functions :  Sensory – monitors internal & external environment through presence of receptors  Integration – interpretation.
Nervous Tissue By Kristin Tuccillo. What three things is nervous tissue a component of? 1) Brain 2) Spinal Cord 3) Nerves.
Nervous Tissue Li DongMei Website ： m-learning.zju.edu.cn.
4.4 Nervous Tissue * L: brain, spinal cord, nerves * F: transmit information.
Neurons and the Nervous System
The Nervous System: Neural Tissue Chapter 13. Human Anatomy, 3rd edition Prentice Hall, © 2001 Introduction Nervous system = control center & communications.
The Nervous System Chapters 39 & 40. Overview Three overlapping functions: sensory input, integration, and motor output Sensory input – the conduction.
Lesson Overview 31.1 The Neuron.
Histology of the Nervous Tissue 1. nervous system overview Nervous system  Monitors and processes sensory information from the environment and from within.
Functions of the Nervous System Functions of the Nervous System  Sensory input – gathering information  To monitor changes occurring inside and outside.
The Function & Anatomy of Neurons What is a Neuron?  It is the cell of nerve tissue that is responsive and conducts impulses within the Nervous System.
The Nervous System.
Biology 30 Unit 1: The Nervous System Intro Recap.
Wei yuanyuan Nervous system I. Nervous system Organization : over 100 billion neuron Central nervous system Brain + spinal cord Peripheral nervous system.
Histology of Nervous Tissue PROF. DR. FAUZIAH OTHMAN DEPT OF HUMAN ANATOMY.
Histology of Nervous Tissue
Nervous System: General Principles PA 544 Clinical Anatomy Tony Serino. Ph.D.
Essentials of Human Anatomy & Physiology Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Seventh Edition Elaine N. Marieb Chapter.
Chapter 12 Intro to the Nervous System. The Nervous System The most complex system Coordinates activities of all body systems Two divisions: The Central.
1 Copyright © 2007 Pearson Prentice Hall, Inc. Neurons: Histology of the Nervous System.
The Nervous System Neuron –Cell body; Dendrites; Axon Three general groups of neurons –Sensory neurons (afferent or receptor) Receive the initial stimulus.
Copyright © 2009 Pearson Education, Inc. Neurons and Neurological Cells: The Cells of the Nervous System  The nervous system  Integrates and coordinates.
Essentials of Human Anatomy & Physiology
Neurons and Neurotransmitters. Nervous System –Central nervous system (CNS): Brain Spinal cord –Peripheral nervous system (PNS): Sensory neurons Motor.
Functions of the nervous system The nervous system is responsible for: - sensory perception - cognitive functions - motor functions - regulatory functions.
Introduction to Nervous System. Composition of Nervous System Two main divisions Two main divisions 1) Central Nervous system (CNS) brain and spinal chord.
The Nervous System: Neural Tissue
Nervous Tissue: Neuroglia = Support Cells Support cells in the Central Nervous System (CNS) are grouped together as neuroglia Neuroglia literally means.
Neurons, Synapses, and Signaling  Overview  Neural Signals  Organization of Nervous Systems.
The Nervous System Control Center for Maintaining Homeostasis.
8.2 Structures and Processes of the Nervous System
End Show Slide 1 of 38 Copyright Pearson Prentice Hall 35-2 The Nervous System.
Lecture Objectives: Identify and define the structures of the neuron
The master communication center of the body.. 3 Main Functions:  Monitor all information about changes occurring both inside and outside the body. 
DR /Noha Elsayed Anatomy &Physiology CLS 221 Nervous system.
Nervous System Structure & Function. Nervous System Master control & communication system for the body Works with other systems to maintain homeostasis.
Nervous System Physiology. 3 functions of the nervous system 1) Sensory Input 2) Integration- decisions 3) Motor Output.
The Nervous System: Neural Tissue Chapter 13. Human Anatomy, 3rd edition Prentice Hall, © 2001 Introduction Nervous system = control center & communications.
Types of Neurons (Nerve Cells) Cells of the nervous system, called neurons, are specialized to carry electrochemical.
Neuron Structure and Function. Nervous System  Nervous system is composed of specialized cells called neurons.  Neurons have long “arms” called axons.
The Nervous System. Functions of the Nervous System 1. Monitors internal and external environment 2. Take in and analyzes information 3. Coordinates voluntary.
The Nervous System. Functions of the Nervous System Figure 7.1.
CH 10 Functions of the Nervous System The master controlling and communicating system of the body Functions 1.Sensory input: detects external and internal.
Chapter 7.  Cell body(soma)  Axon Hillock  Axon  Axon Terminal  Dendrites  Myelin Sheath.
 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.
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.
CHS AP Psychology Unit 3: Biological Psychology Essential Task 3-1: Identify the basic parts of the neuron (dendrites, cell body, axon, terminal buttons,
The Nervous System: Neural Tissue. Introduction –Nervous system = control center & communications network –Functions  Stimulates movements  Maintains.
Fundamentals of the Nervous System and Nervous Tissue.
Introduction to Nervous System
Ch. 10 Nervous System basic Structure and Function
Chapter 28 Nervous system. NERVOUS SYSTEM STRUCTURE AND FUNCTION © 2012 Pearson Education, Inc.
Nervous System. The nervous system is broken down into two major parts:
THE NERVOUS SYSTEM. Brain WHAT PARTS DO YOU KNOW THAT ARE IN THE NERVOUS SYSTEM? Spinal Cord Peripheral Nerves.
CHAPTER 7. FUNCTIONS 1. Sensory Input- sensory receptors respond to external and internal stimuli by generating nerve impulses that travel to the brain.
Nervous Tissue.
Do Now 1/7/15 Welcome back – happy 2015!
Nervous System
Nervous tissue.
NOTES - UNIT 5 part 1: Nervous System Organization
NOTES - UNIT 5 part 1: Nervous System Organization
Nervous Tissue.
Ch. 10: Nervous System Basic Structure and Function
Presentation transcript:

Nervous Tissue Li DongMei

Central nervous system (CNS) Central nervous system (CNS) Peripheral nervous system (PNS) Peripheral nervous system (PNS)

Composition of nerve tissue Two types of cells Two types of cells ---Components: nerve cell: neuron nerve cell: neuron Glial cell: neuroglial Glial cell: neuroglial---Function: Neurons : receive the stimulation, conduct the nerve impulse Neurons : receive the stimulation, conduct the nerve impulse Glial cell: support, protect and insulate, nourish neurons Glial cell: support, protect and insulate, nourish neurons

1. Neuron

It is the structural and functional unit of the nervous tissue. It is the structural and functional unit of the nervous tissue. Neuron is a cell that transmits nerve impulses Neuron is a cell that transmits nerve impulses 10 billion neurons and more glial cells form human nervous system 10 billion neurons and more glial cells form human nervous system Neuron consists of cell body(soma), dendrite and axon. Neuron consists of cell body(soma), dendrite and axon.

Cell body Dendrite Axon processes

① Cell body of neuron (perikaryon)

①

② Dendrites No Golgi complex, other contents are similar to the cell body. Increase the receptor surface area of a neuron. To receive stimuli from other neurons or from the external environment.

③ Axon A Long Fiber that carries impulses away from the cell body. Each neuron has only one axon. The Axon Ends in a series of small swellings called axon terminals

2. Synapses

Specialized junctions between neurons, between axons and effector cells

Electrical synapses gap junctions Chemical synapses taking neurotransmitter as communicating medium Classification

Chemical synapse

Synaptic transmission Calcium gates open Calcium gates open Synaptic vesicles release neurotransmitter Synaptic vesicles release neurotransmitter Neurotransmitter binds with postsynaptic receptors Neurotransmitter binds with postsynaptic receptors The postsynaptic membrane is excited or inhibited The postsynaptic membrane is excited or inhibited The neurotransmitter is degraded and recycled. The neurotransmitter is degraded and recycled.

3. Glial cell(neuroglia)

Schwann cell envelop the axon end to end to form myelin-sheath in PNS and envelop the axon end to end to form myelin-sheath in PNS and

Satellite cell (capsular cell) Satellite cell (capsular cell) one layer of flattened or cuboidal cell, with round, ovoid and dark N one layer of flattened or cuboidal cell, with round, ovoid and dark N surrounding the Neuron in ganglion surrounding the Neuron in ganglion

4.Nerve fiber and Nerve

Nerve fiber definition: axon enveloped by neuroglial cells classification: according to myelin-sheath myelinated nerve fiber myelinated nerve fiber unmyelinated nerve fiber unmyelinated nerve fiber

myelinated nerve fiber myelinated nerve fiber in CNS ---structure: similar to in PNS myelin-sheath formed by flattened ending of oligodendrocyte’s processes one oligodendrocyte can envelop many axons no incisure and basement membrane

Nerve

5. Nerve Ending

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

© 2024 SlidePlayer.com Inc. All rights reserved.