The Structure of Neurones Aims 1.To describe the structure of sensory and motor neurones 2.To relate the structure of sensory and motor neurones to their.

Slides:



Advertisements
Similar presentations
THE NERVOUS SYSTEM.
Advertisements

Nerve Cells The Neuron.
Neurons and the Nervous System
The neurone Learning objectives: Explain how the neurone is adapted for its function.
Lesson Overview 31.1 The Neuron.
STARTER #3 1.Label the cavities to the right a. b. c. d. 2.What type of tissue is this? 1.What type of tissue lines organs and cavities?
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.
Learning Target: Neurons Basic Unit of the Nervous System.
The Neuron An everyday (every second!) use of active transport
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.
Chapter 48 Neurons, Synapses, and Signaling. Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings Overview: Lines of Communication.
The Nervous System The nervous system controls and coordinates functions throughout the body and responds to internal and external stimuli.
Detects changes in the body Make decisions Stimulate muscles or glands to respond Works by sending an electrical signal known as an action potential through.
Neuron Structure and Function. Nervous System  Nervous system is composed of specialized cells called neurons.  Neurons have long “arms” called axons.
Nervous System & Neurons
The Neuron  The basic functional unit of the nervous system.  Function: Send impulses to and from the CNS and PNS and the effectors (muscles/glands)
Neuron organization and structure reflect function in information transfer The squid possesses extremely large nerve cells and is a good model for studying.
Nervous System the nervous system receives and interprets information from the internal and external environment and produces a response that allows the.
Copyright © 2009 Pearson Education, Inc. Neurons and Neurological Cells: The Cells of the Nervous System  The nervous system  Integrates and coordinates.
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.
PREPARED BY HUGH POTTER,Ph.D
The Nervous System Control Center for Maintaining Homeostasis.
Nervous communication.  Nervous system provides fast communication and coordination  Mammalian nervous system:  Central nervous system (CNS): brain.
8.2 Structures and Processes of the Nervous System
The Nervous System Nervous Tissues and the Synapse Chapter 11.
The Neuron An everyday (every second!) use of active transport.
WARM UP 3/8 1. Use Na+, receptors, Ach, action potential, neuromuscular junction in a sentence. 2. List 5 things you learned on the internet assignment.
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.
Sport Books Publisher1 Information Processing in Motor Learning Chapter 10.
Neurons, Synapses, and Signaling
Bio 12 NEURONS. Joke of the day: Wouldn’t that be great!
The master communication center of the body.. 3 Main Functions:  Monitor all information about changes occurring both inside and outside the body. 
Part 1 Biology 12.  Neurons  Gathers & transmits electro-chemical signals DID YOU KNOW????  Neurons cannot be repaired  Some last a life time  Approximately.
DR /Noha Elsayed Anatomy &Physiology CLS 221 Nervous system.
The Nervous System.
Our electrochemical controls
Brain and Behavior Neurons W HAT ARE NEURONS ? Cells transmitting info in the nervous system Neurons exist in circuits  Group of neurons.
Neuron Structure and Function. Nervous System  Nervous system is composed of specialized cells called neurons.  Neurons have long “arms” called axons.
1 Psychology 304: Brain and Behaviour Lecture 9. 2 The Structure and Cells of the Nervous System 2. What is the structure of the neuron? 1.What is the.
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.
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.
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.
Chapter 49 Table of Contents Section 1 Neurons and Nerve Impulses.
Neurons and Neurotransmitters. Nervous System –Central nervous system (CNS): Brain Spinal cord –Peripheral nervous system (PNS): Sensory neurons Motor.
Section 33.1: Structure of the Nervous System. A. Neurons Neurons  specialized cells that help you gather info about your environment, interpret the.
Neurons and neural pathways
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:
CHAPTER 7. FUNCTIONS 1. Sensory Input- sensory receptors respond to external and internal stimuli by generating nerve impulses that travel to the brain.
Nerve Cell Physiology Obert Tada Dept of Livestock & Wildlife Management.
Biology SL Ms. Ragsdale.  Central Nervous System (CNS) – the control center of your brain  Receives all the impulses from your body and coordinates.
Nervous System
Structure of a Neuron Types of Neurons and their basic structures.
Objective: to describe the general characteristics of and functions of nervous tissue.
Copyright Pearson Prentice Hall
NOTES - UNIT 5 part 1: Nervous System Organization
The Human Nervous System 35-1
NOTES - UNIT 5 part 1: Nervous System Organization
Nervous system.
NEURONS Bio 12.
Introduction to the Nervous System Chapter 35
Saltatory conduction in nerve impulses
Presentation transcript:

The Structure of Neurones Aims 1.To describe the structure of sensory and motor neurones 2.To relate the structure of sensory and motor neurones to their function

NeuronesNeurones

Click button to reveal type of neurone and direction of impulse. Neurone 1

Click any label to reveal name of structure. AAAA BBBB CCCC DDDD EEEE FFFF GGGGImpulse Sensory Neurone

AAAA Click button to reveal further information. Schwann Cell BBBB CCCC DDDD EEEE FFFF GGGGImpulse Sensory Neurone

AAAA Found in mammals. Cell wraps itself around axon, enclosing it in many layers of plasma membrane. This creates a myelin sheath (largely lipids with some proteins) which speeds up conduction by offering electrical insulation. They can carry out phagocytosis to remove cell debris. Schwann Cell BBBB CCCC DDDD EEEE FFFF GGGGImpulse Sensory Neurone

Click button to reveal further information. AAAA BBBB CCCC DDDD EEEE FFFF GGGG Cell Body Impulse Sensory Neurone

Cell body contains neurone’s nucleus and cytoplasm with many mitochondria and ER. Groups of ribosomes are often visible as dark specs. Neurotransmitter (e.g. Serotonin) are produced here. AAAA BBBB CCCC DDDD EEEE FFFF GGGG Cell Body Impulse Sensory Neurone

Click button to reveal further information. AAAA BBBB CCCC DDDD EEEE FFFF GGGGReceptor Impulse Sensory Neurone

Receptor cells are transducers – convert one form of energy e.g. light or heat into electrical energy. Often found in sense organs. Initiate the action potential in the sensory neurone in response to a stimuli. AAAA BBBB CCCC DDDD EEEE FFFF GGGGReceptor Impulse Sensory Neurone

DDDD Click button to reveal further information. Synaptic knob AAAA BBBB CCCC EEEE FFFF GGGGImpulse Sensory Neurone

DDDD Axon terminates in a junction with next neurone. A gap of 20nm between them. The knob is packed with mitochondria and vesicles with neurotransmitter. This will diffuse across gap and excite/inhibit signal in next neurone. Synaptic knob AAAA BBBB CCCC EEEE FFFF GGGGImpulse Sensory Neurone

EEEE Click button to reveal further information. Axon AAAA BBBB CCCC DDDD FFFF GGGGImpulse Sensory Neurone

Extension of cytoplasm from the cell body. Carries electrical signal (action potential) from the cell body to the synaptic knobs in the central nervous system (CNS). AAAA BBBB CCCC DDDD EEEE FFFF GGGGAxon Impulse Sensory Neurone

Click button to reveal further information. AAAA BBBB CCCC DDDD EEEE FFFF GGGG Node of Ranvier Impulse Sensory Neurone

2-3μm gaps in the myelination of the axon. Occur between Schwann cells every 2-3mm. Help speed of transmission by enabling action potential to jump from one node to next. AAAA BBBB CCCC DDDD EEEE FFFF GGGG Node of Ranvier Impulse Sensory Neurone

Click button to reveal further information. AAAA BBBB CCCC DDDD EEEE FFFF GGGGDendrites Impulse Sensory Neurone

Many thin extensions of cytoplasm from the cell body. Carry the electrical signal (action potential) from the receptor to the cell body. AAAA BBBB CCCC DDDD EEEE FFFF GGGGDendrites Impulse Sensory Neurone

Click button to reveal type of neurone and direction of impulse. Neurone 2

BBBB DDDD EEEE FFFF Many thin extensions of cytoplasm from the cell body. Carry the electrical signal (action potential) from synapse with previous neurone to the cell body. GGGGF Impulse Motor Neurone Dendrites AAAA CCCC

Click any label to reveal name of structure. BBBB CCCC AAAA DDDD EEEE FFFFImpulse Motor Neurone

BBBB DDDD EEEE FFFF Click button to reveal further information. GGGGF Impulse Motor Neurone Dendrites AAAA CCCC

BBBB DDDD EEEE FFFF Click button to reveal further information. Impulse Motor Neurone Node of Ranvier AAAA CCCC

BBBB DDDD EEEE FFFF 2-3μm gaps in the myelination of the axon. Occur between Schwann cells every 2-3mm. Help speed of transmission by enabling action potential to jump from one node to next. Impulse Motor Neurone Node of Ranvier AAAA CCCC

BBBB DDDD EEEE FFFF Click button to reveal further information. DDDDImpulse Motor Neurone Axon AAAA CCCC

BBBB DDDD EEEE FFFF Extension of cytoplasm from the cell body. Carries electrical signal (action potential) from the cell body in the CNS to the synaptic knobs at neuromuscular junctions. An axon in a motor neurone can be over a metre long! DDDDImpulse Motor Neurone Axon AAAA CCCC

BBBB CCCC DDDD EEEE FFFF Click button to reveal further information. CCCCImpulse Motor Neurone Cell body AAAA

BBBB CCCC DDDD EEEE FFFF Cell body contains neurone’s nucleus and cytoplasm with many mitochondria and ER. Groups of ribosomes are often visible as dark specs. CCCCImpulse Motor Neurone Cell body AAAA

BBBB DDDD EEEE FFFF Click button to reveal further information. BBBBImpulse Motor Neurone Schwann cell AAAA CCCC

BBBB DDDD EEEE FFFF Found in mammals. Cell wraps itself around axon, enclosing it in many layers of plasma membrane. This creates a myelin sheath (largely lipids with some proteins) which speeds up conduction. BBBBImpulse Motor Neurone Schwann cell AAAA CCCC

BBBB AAAA DDDD EEEE FFFF Click button to reveal further information. AAAAImpulse Motor Neurone Synaptic knob CCCC

BBBB AAAA DDDD EEEE FFFF Axon terminates with a neuromuscular junction. The knob is packed with mitochondria and vesicles with neurotransmitter. This will diffuse across junction and lead to contraction of muscle. AAAAImpulse Motor Neurone Synaptic knob CCCC

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

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