How Does the Brain Compute?. A nerve cell, or a neuron, consists of many different parts.

Slides:

Advertisements

Similar presentations

Advertisements

Functional Organization of Nervous Tissue

Introduction to Nervous System Dr. Sama-ul-Haque.

Lecture packet 9 Reading: Chapter 7

Nervous System FUNCTION: Senses, processes, interprets, and determines the response to stimuli from the environment Central Nervous System (CNS) - made.

The Nervous System and Neurons Is this even possible? Why or why not?

Functions of the Nervous System

Lesson Overview 31.1 The Neuron.

Learning Target: Neurons Basic Unit of the Nervous System.

Types of Neurons and Nerve Impulses. Parts of a Neuron Cell body Axon – nerve fiber running from cell body to synapse Synapse – terminating end of neuron.

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.

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.

Body Systems Nervous System. Nervous System Functions  Sensory input – sense organs, receptors, –afferent neurons  Integration – Central Nervous System(CNS)

Nervous System & Neurons

The Nervous System Anatomy and Physiology Nervous System Functions 1. Sensory-receptors gather information and pass it on toward the CNS 2. Integrative-in.

The Nervous System Neuron –Cell body; Dendrites; Axon Three general groups of neurons –Sensory neurons (afferent or receptor) Receive the initial stimulus.

Neurons and Nervous System

The Nervous System Components Brain, spinal cord, nerves, sensory receptors Responsible for Sensory perceptions, mental activities, stimulating muscle.

The Nervous System. Introduction In all animals, except the sponges, responses to stimuli depend on the activities of networks of nerve cell, or neurons.

Neurons and Neurotransmitters. Nervous System –Central nervous system (CNS): Brain Spinal cord –Peripheral nervous system (PNS): Sensory neurons Motor.

The Nervous System Chapter 6

THE NERVOUS SYSTEM Chapter 8. Neural Tissue Neurons Neuroglia.

NERVOUS SYSTEM NERVOUS TISSUE. Nervous System - General Control System Regulator of Homeostasis Electrical Impulses Rapid & Transient Effects.

The Nervous System Nervous Tissues and the Synapse Chapter 11.

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.

End Show Slide 1 of 38 Copyright Pearson Prentice Hall 35-2 The Nervous System.

Chapter 17 The nervous system.

Sport Books Publisher1 Information Processing in Motor Learning Chapter 10.

Sgs-psychology.org.uk Structure and Function of the Nervous System An introduction to Physiological Psychology.

Sending Signals Notes. Structure of Single Neuron.

The Nervous System.

Nervous System Physiology. 3 functions of the nervous system 1) Sensory Input 2) Integration- decisions 3) Motor Output.

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

 Elaborate communication system that contains more than 100 billion nerve cells in the brain alone  Control the actions of the body  Makes adjustments.

FUNCTIONAL ORGANIZATION OF THE NERVOUS SYSTEM

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.

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.

Nervous System Part 3: Neurons & Nerve Impulses. Neuron Structure A neuron is a nerve cellA neuron is a nerve cell The nucleus of a neuron and most of.

Nervous System Function

Nervous System. The nervous system is broken down into two major parts:

Nervous Tissue.

Neurons FG4&feature=related.

The Nervous System.

NEED TO SHORTEN 7 49 slides 3 hour & 10 min The Nervous System.

6.5 – Neurones and Synapses

6.5 – Neurones and Synapses

Nervous System Biology.

6.5 Neurons & Synapses.

Neuron Function.

6.5 Neurons & Synapses.

Cell Communication: Neuron.

Information Processing in Motor Learning

The Nervous System and Neurons

Neuronal Signals.

6.5 Neurons & Synapses.

The Nervous System AP Biology Unit 6.

Nerve cells and their support system

Nervous Tissue.

The Nervous System and Neurons

7 The Nervous System PPT-A This ppt: 7 slides

The Nervous System and Neurons

Neurons are highly specialized cells.

Presentation transcript:

How Does the Brain Compute?

A nerve cell, or a neuron, consists of many different parts.

Sensory Neuron (Bipolar) Interneuron Neuron (Unipolar) Motor Neuron (Multipolar Neuron) Types of Neurons

Sensory Neurons – Afferent Neurons Carry the message from the sense organs to the CNS Interneurons Make up the CNS Motor Neurons – Efferent Neurons Carry the message from the CNS to the muscles or glands

How is the Electrical Signal Sent? 2 K+ 3 Na+ ATP Outside Inside K+ The Resting Potential K Na Proteins (A) -

How is the Electrical Signal Sent? All or none! Outside Inside K Na K K K K K K K K K K

How is Information Transmitted? If neurons do not touch, how can information get from one neuron to the next neuron?

How is Information Transmitted ?

Recycling channel Neurotransmitters Postsynaptic Receptors Recycling Channels 1 2

How is Information Transmitted ? Reuptake Diffusion Enzymatic Degradation

How is Information Transmitted ? Reuptake Diffusion Enzymatic Degradation

How is Information Transmitted ? Reuptake Diffusion Enzymatic Degradation Enzyme

How is Information Transmitted ? (The Synapse) Neurotransmitters Dendrite Soma Axon Terminal

How is Information Transmitted ? Neurotoxins! Blocks ACh (nicotinic) receptors Blocks Na+ channels Increases release of ACh Blocks K+ channels Blocks Ca++ channels

How is Information Transmitted ? Nerve Agents Tabun (GA) Sarin (GB) Soman (GD) VX 1995 – Tokyo Subway (Sarin) 2013 – Syria (Sarin) 2013 – Bihar, India (Organophosphate pesticides)

How is Information Transmitted ? Action Potential Synaptic Terminal Neurotransmitters Axon Cell Body Dendrites

How Fast do Electrical Signals Travel? 100 mile/hr – 160 km/hr

Saltatory Conduction Node of Ranvier Myelin Axon Increases speed of conduction! vs Unmyelinated vs Myelinated Axons