logging in or signing up Ch 3: Neurons and Glia wessellr Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1181 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: December 04, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: shivu66666 (24 month(s) ago) thank you very much ! slides are really nice and useful to students !!! i loooking forward for your slides on psychology(stress and coping) ahead.... Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Slide 1: The Systems, Structures, and Cells That Make Up Your Nervous System Chapter 3 The Anatomy of the Nervous System General Layout of the Nervous System : General Layout of the Nervous System Central Nervous System (CNS) Brain (in the skull) Spinal Cord (in the spine) Peripheral Nervous System (PNS) Located outside of the skull and spine Serves to bring information into the CNS and carry signals out of the CNS General Layout of the Nervous System (continued) : General Layout of the Nervous System (continued) Peripheral Nervous System Somatic Nervous System Afferent nerves (sensory) Efferent nerves (motor) Autonomic Nervous System Sympathetic and parasympathetic nerves Both are efferent Autonomic Nervous System : Autonomic Nervous System All nerves are efferent Sympathetic and parasympathetic nerves generally have opposite effects Two-stage neural paths, neuron exiting the CNS synapses on a second-stage neuron before the target organ Autonomic Nervous System(continued) : Autonomic Nervous System(continued) Sympathetic Thoracic and lumbar “Fight or flight” Second stage neurons are far from the target organ Parasympathetic Cranial and sacral “Rest and restore” Second stage neurons are near the target organ Slide 6: Major divisions of the nervous system Meninges, Ventricles, and Cerebrospinal Fluid (CSF) : Meninges, Ventricles, and Cerebrospinal Fluid (CSF) CNS encased in bone and covered by three meninges Dura mater – tough outer membrane Arachnoid membrane – web-like Pia mater – adheres to CNS surface Cerebrospinal fluid (CSF) Fluid serves as cushion Protecting the Brain : Protecting the Brain Chemical protection The blood-brain barrier – tightly-packed cells of blood vessel walls prevent entry of many molecules Physical protection Skull Meninges Cerebrospinal fluid (CSF) Cells of the Nervous System : Cells of the Nervous System Neurons Specialized cells for the reception, conduction, and transmission of electrochemical signals Many sizes and shapes Glial cells Outnumber neurons 10:1 Slide 10: Major external features of a typical neuron Cells of the Nervous System Slide 11: The cell mem- brane Cells of the Nervous System (continued) Slide 12: Cells of the Nervous System (continued) Four types of neurons Glial Cells: The Forgotten Majority : Glial Cells: The Forgotten Majority Four classes: Oligodendrocytes – extensions rich in myelin create myelin sheaths in CNS Schwann cells – similar to function of oligodendrocytes but in PNS, can guide axonal regeneration Astrocytes – largest glia, star-shaped, many functions Microglia – involved in response to injury or disease Terminology Note : Terminology Note You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
Ch 3: Neurons and Glia wessellr Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1181 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: December 04, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: shivu66666 (24 month(s) ago) thank you very much ! slides are really nice and useful to students !!! i loooking forward for your slides on psychology(stress and coping) ahead.... Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Slide 1: The Systems, Structures, and Cells That Make Up Your Nervous System Chapter 3 The Anatomy of the Nervous System General Layout of the Nervous System : General Layout of the Nervous System Central Nervous System (CNS) Brain (in the skull) Spinal Cord (in the spine) Peripheral Nervous System (PNS) Located outside of the skull and spine Serves to bring information into the CNS and carry signals out of the CNS General Layout of the Nervous System (continued) : General Layout of the Nervous System (continued) Peripheral Nervous System Somatic Nervous System Afferent nerves (sensory) Efferent nerves (motor) Autonomic Nervous System Sympathetic and parasympathetic nerves Both are efferent Autonomic Nervous System : Autonomic Nervous System All nerves are efferent Sympathetic and parasympathetic nerves generally have opposite effects Two-stage neural paths, neuron exiting the CNS synapses on a second-stage neuron before the target organ Autonomic Nervous System(continued) : Autonomic Nervous System(continued) Sympathetic Thoracic and lumbar “Fight or flight” Second stage neurons are far from the target organ Parasympathetic Cranial and sacral “Rest and restore” Second stage neurons are near the target organ Slide 6: Major divisions of the nervous system Meninges, Ventricles, and Cerebrospinal Fluid (CSF) : Meninges, Ventricles, and Cerebrospinal Fluid (CSF) CNS encased in bone and covered by three meninges Dura mater – tough outer membrane Arachnoid membrane – web-like Pia mater – adheres to CNS surface Cerebrospinal fluid (CSF) Fluid serves as cushion Protecting the Brain : Protecting the Brain Chemical protection The blood-brain barrier – tightly-packed cells of blood vessel walls prevent entry of many molecules Physical protection Skull Meninges Cerebrospinal fluid (CSF) Cells of the Nervous System : Cells of the Nervous System Neurons Specialized cells for the reception, conduction, and transmission of electrochemical signals Many sizes and shapes Glial cells Outnumber neurons 10:1 Slide 10: Major external features of a typical neuron Cells of the Nervous System Slide 11: The cell mem- brane Cells of the Nervous System (continued) Slide 12: Cells of the Nervous System (continued) Four types of neurons Glial Cells: The Forgotten Majority : Glial Cells: The Forgotten Majority Four classes: Oligodendrocytes – extensions rich in myelin create myelin sheaths in CNS Schwann cells – similar to function of oligodendrocytes but in PNS, can guide axonal regeneration Astrocytes – largest glia, star-shaped, many functions Microglia – involved in response to injury or disease Terminology Note : Terminology Note