Nervous System Chapter 48.

Slides:



Advertisements
Similar presentations
Topic Nerves.
Advertisements

The Electrical Nature of Nerves
Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings PowerPoint ® Lecture Presentations for Biology Eighth Edition Neil Campbell.
ANIMALS HAVE NERVOUS SYSTEMS THAT DETECT EXTERNAL AND INTERNAL SIGNALS, TRANSMIT AND INTEGRATE INFORMATION, AND PRODUCE RESPONSES
Communication and The Nervous System Big Idea 3: Living systems store, retrieve, transmit, and respond to info essential to life processes.
Essential knowledge 3.E.2 Animals have nervous systems that detect external and internal signals, transmit and integrate information, and produce responses.
The Nervous System The nervous system controls and coordinates functions throughout the body and responds to internal and external stimuli.
Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings PowerPoint ® Lecture Presentations for Biology Eighth Edition Neil Campbell.
35.2.  Controls and coordinates functions throughout the body.  Responds to external and internal messages.  The body’s  communication system.
Body Systems Nervous System. Nervous System Functions  Sensory input – sense organs, receptors, –afferent neurons  Integration – Central Nervous System(CNS)
Nervous System & Neurons
Neuron organization and structure reflect function in information transfer The squid possesses extremely large nerve cells and is a good model for studying.
Neurons, Synapses, and Signaling
CHAPTER 48  NEURONS, SYNAPSES, & SIGNALING 48.1  Neuron organization & Structure I. Intro to information processing A. Processing 1. Sensory input a.
Essential knowledge 3.E.2: Animals have nervous systems that detect external and internal signals, transmit and integrate information, and produce responses.
October 2,  Nerve cells  Conduct impulses that carry signals  Types  Sensory ▪ Respond to incoming stimuli ▪ Transmit information from senses.
Nervous System Reflexes and Action Potential How do cells detect and respond to changes in their internal and external environment to successfully survive.
Chapter 17 The nervous system.
Neurons, Synapses, and Signaling
Neurons- The matter of the nervous system
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.
The Nervous System & Neurons Unit 9 Chapter 35-2.
3.E.2 Nervous System Animals have nervous systems that detect external and internal signals, transmit and integrate information, and produce responses.
Nervous System
Nervous System. What are the functions of the nervous system? It receives information about what is happening both internal and external stimuli. It directs.
 Chapter 48 Gaby Gonzalez Joyce Kim Stephanie Kim.
Chapter 48/49 Neurons and the Nervous System. Overview: Lines of Communication The cone snail kills prey with venom that disables neurons Neurons are.
Ch  Nearly all multicellular organisms have communication systems  Specialized cells carry messages from one cell to another.  NERVOUS SYSTEM.
Resting Membrane Potential
Nervous System: Central Nervous System:
Building the Model Neurons or parts of neurons Ions Gates dendrite
3.E.2 Nervous System Animals have nervous systems that detect external and internal signals, transmit and integrate information, and produce responses.
Chapter 48: Nervous System
WARM UP “The secret of action is to begin.”
Human Anatomy / Physiology
Chapter 48 Nervous System
Neurons are highly specialized cells.
Copyright Pearson Prentice Hall
13.1 Overview of the nervous system
6.6: Animals have nervous systems that detect external and internal signals, transmit and integrate information, and produce responses. 1. Neurons.
6.5 Neurons & Synapses.
Warm Up What is actually occurring inside the cell when a neuron has an “impulse” traveling through it?
Warm-Up Look up the definitions of the Central Nervous System vs. the Peripheral Nervous System. Compare these two types of nervous systems. What is a.
Neurons, Synapses, and Signaling
The Nervous System chapter 37
6.5 Neurons & Synapses.
Neurons, Synapses, and Signaling
Cell Communication.
Neurons, Synapses, and Signaling
2 Functional Properties of Neurons
Chapters 48 & 49 Campbell Biology – 9th ed.
Warm-Up Look up the definitions of the Central Nervous System vs. the Peripheral Nervous System. Compare these two types of nervous systems. What is a.
Cell Communication: Neuron.
Information Processing in Motor Learning
Biology Powerpoint #3 Unit 8 – Chapter 35
The Nervous System and Neurons
Neuronal Signals.
Chapters 48 & 49 Neurons and the Nervous System
Unit 5, Part 2 Notes – The Nervous System
Animals have nervous systems that detect external and internal signals, transmit and integrate information, and produce responses. Neurons.
6.5 Neurons & Synapses.
Fundamentals of the Nervous System and Nervous Tissue
Animals have nervous systems that detect external and internal signals, transmit and integrate information, and produce responses. Neurons.
Nervous system.
Friday - 3/11/16 Question of the Day Agenda In a neuron, what are the functions of dendrites and the myelin sheath? Microglial cells dispose of debris.
The Nervous System and Neurons
Neurons.
The Neuron March 08, 2016 AP Psych Ms. Sallo.
Neurons are highly specialized cells.
Presentation transcript:

Nervous System Chapter 48

All Life: Responds to the Environment Animals have evolved a complex nervous system which: Detects external and internal signals Transmit and integrate information Produce responses

Primary Organ: Brain Different regions have different functions Vision Hearing Muscle movement Abstract thought and emotion Neuro-hormone production

Primary Cell: Neuron Structure: Function: Cell body Axon Dendrite Detection Generation Transmission Integration

Schwann cells Myelin sheath is electrical insulator Impulses travel faster

How does a neuron transmit information Resting Neuron: Uses ATP to continually pump (3) NA+ out for every (2) K+ into the axon This establishes an electrochemical gradient (resting membrane potential)

Neuron Animation http://highered.mheducation.com/sites/0072495855/student_view0/chapter2/animation__how_the_sodium_potassium_pump_works.html http://highered.mheducation.com/sites/0072495855/student_view0/chapter14/animation__the_nerve_impulse.html

How does a neuron transmit information Detection: Sensory receptor cells convert a stimulus into a voltage

How does a neuron transmit information Generation: If the sensory cell converts enough stimuli into electricity, a threshold voltage is established and a signal is sent to open ion channels at the start of an axon

How does a neuron transmit information Transmission: Na+ and K+ gated channels sequentially open/close which cause local depolarization

How does a neuron transmit information Transmission: When the message reaches the end of the axon, it must cross a synapse This process involves neurotransmitters (cell communication) Acetylcholine Epinephrine Norepinephrine Dopamine Serotonin GABA

How does a neuron transmit information Integration: Interneurons receive information and determine appropriate response

How does a neuron transmit information Response: Stimulatory or inhibitory output

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

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