Anatomy and Physiology

Slides:

Advertisements

Similar presentations

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

Advertisements

Nervous Tissue today Exam key posted on website Exam #1 rebuttals due next Thursday April 27 th at 1:30.

The Nervous System Chapter 9. Learning Targets By end of this lesson, you should be able to: Differentiate between the central and peripheral nervous.

29.2 Nervous System and Neurons

The Nervous system has three major functions :  Sensory – monitors internal & external environment through presence of receptors  Integration – interpretation.

Nervous System Communication. Kid Concussions In The News.

Neurons and the Nervous System

Chapter 10 Key Terms 1 AcetylcholineEpinephrine Afferent NeuronsEfferent Neurons AstrocytesAxon Axon TerminalsDopamine DendritesEndorphins NeuronsReflex.

Part 1: The Nervous System ANATOMY & PHYSIOLOGY. Three Functions of the Nervous System: Sensory Input: Gathers stimuli (receives information) Integration:

Anatomy and Physiology I The Nervous System Basic Structure and Function Instructor: Mary Holman.

THE NERVOUS SYSTEM Definition: A network of billions of nerve cells linked together to form the rapid control center of the body. Main function: Integrating.

The Nervous System Functions, Structures and the Classification of Neurons

Functions of the Nervous System Functions of the Nervous System  Sensory input – gathering information  To monitor changes occurring inside and outside.

10.1: Introduction Cell types in neural tissue: Neurons

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. Functions of Nervous System The nervous system is the major controlling, regulatory, and communicating system in the body. It is the center.

1 Copyright © 2007 Pearson Prentice Hall, Inc. Neurons: Histology of the Nervous System.

Copyright © 2009 Pearson Education, Inc. Neurons and Neurological Cells: The Cells of the Nervous System  The nervous system  Integrates and coordinates.

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

The Nervous System Part 1 “Organization of the Nervous System”

Essentials of Human Anatomy & Physiology

Chapter 7 The Nervous System. Functions of the Nervous System 1. Sensory input – gathering information  monitor changes inside and outside the body 

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

The Nervous System Chapter 11.

The Nervous System. Functions of the Nervous System Receive Sensory Input Integrate Information (Immediate response, ignore it, store in memory) Control.

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.

Nervous Tissue: Neuroglia = Support Cells Support cells in the Central Nervous System (CNS) are grouped together as neuroglia Neuroglia literally means.

Nervous Tissue 2 Originally Given By: Dr.Ahmed Attayeb Written By: Dr.Divine, Edited & Made up 2 date: Abo Malik Thanks for: DR.I.

Warm Up List the events in the nervous system that occur if you accidentally get a paper cut. How does your body respond?

The Nervous System maintains homeostasis and responds to stimuli faster than any other system! Part A. Organization Part B. Neural Tissue Chapter 12 Organization.

Structural Classification of the Nervous System

The Nervous System By Eko Widodo. The nervous system is one of the 2 control systems in our body. The nervous system is designed for fast action. It coordinates.

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.

Our electrochemical controls

The Nervous System. Functions of the Nervous System 1. Monitors internal and external environment 2. Take in and analyzes information 3. Coordinates voluntary.

Histology of Nervous Tissue

9 Unit 1 Chapter 9. 9 Unit 1 Brain- Neurons enclosed in skull Spinal cord– connects to brain & enclosed in spinal cavity Nerves- bundles of neuronal axons.

CH. 7 NERVOUS SYSTEM MRS. BARNES. Nervous System Central Nervous System (CNS): brain and spinal cord. Peripheral Nervous System (PNS): nerves of the body.

Sponge: Set up Cornell Notes on pg. 3 Topic: Ch Basic Structure and function of the NS Essential Question: 1.What is the difference between neurons.

Nervous System. Functions of the Nervous System Monitor internal and external environments Integrate sensory information Coordinate voluntary and involuntary.

Anatomy of the Nervous System. Nervous and Endocrine Systems work together to maintain homeostasis Nervous System Electrical signals FAST – milliseconds.

Nervous System. Responds to stimuli to maintain homeostasis. Stimulus (Stimuli) = a signal to which an organism reacts Response = some action or movement.

Organization of the Nervous System Exercise 7, 18.

The Nervous System. Central Nervous System (CNS) – brain and spinal cord Peripheral Nervous System (PNS) – nerves that communicate to the rest of the.

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

Ch. 10 Nervous System basic Structure and Function

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!

Chapter 8 Nervous System 5 Functions 1. Sensory function = receptors monitor external & internal body changes; providing input 5 Functions 1. Sensory function.

Nervous System.

Starting small: The Neuron

The Nervous System : communication

Nervous System An Introduction.

Nervous System Chapter 9.

NERVOUS SYSTEM REVIEW.

Nervous System An Introduction.

THREE BASIC FUNCTIONS OF THE NERVOUS SYSTEM

Figure 11.2 Schematic of levels of organization in the nervous system.

NOTES - UNIT 5 part 1: Nervous System Organization

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.

Chapter 10 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

The Nervous System What does it mean to be “brain-dead?”

Chapter 7 The Nervous System

Overview of the Nervous System

Presentation transcript:

Anatomy and Physiology Nervous System Notes

Organization of the NS Central Nervous System (CNS) Brain Spinal Cord Peripheral Nervous System (PNS) 31 pairs of spinal nerves 12 cranial nerves

Functions of the NS Sensory Motor Integrative / Association gathers info about changes occurring within and around the body - Sensory receptors, at ends of peripheral nerves send signals (nerve impulses) to the CNS. Sensory Neuron Motor responses to signals (impulses). Signals sent from the CNS to effectors (muscles or glands). The goal is usually to maintain stable conditions (especially internal) – Homeostasis. Motor neurons. Somatic Nervous System (voluntary skelteal muscles) Autonomic Nervous System (involuntary smooth muscles; glands) Integrative / Association information is “brought together,” interpreted, to create sensations, create thoughts, add to memory, make decisions, etc. Association neuron or interneuron

Cells of the NS Neuronal Non-Neuronal (Neuroglial/Glial Cells) Neurons (pictured here) Conduct action potentials (nerve impulses) Non-Neuronal (Neuroglial/Glial Cells) Supportive Cells Astrocytes Ependymal Cells Microglial Cells

Glial Cells 1. Astrocytes - Forms tight junctions between endothelial cells of capillaries to form Blood-Brain-Barrier BBB: - Exchange sight for -Nutrients -Wastes - Ultimate protection layer around brain & spinal cord

Glial Cells 2. Ependymal Cells - secrete Cerebrospinal Fluid (CSF) within the ventricles of the brain

Glial Cells 3. Microglial Cells - Phagocytic (engulf/eat) in response to inflammation -Necrotic (dead) tissue -Bacteria -Foreign substances

Glial Cells 4. Oligodendrocyte - form the myelin sheath in CNS - Insulates neurons, speeding up the rate of the action potential - Involved in many neurodegenerative problems: - MS (multiple sclerosis) - ALD (adrenoleukodystrophy) - ALS (Lou Gehrig’s Disease)

The Neuron Dendrites Cell Body Axon Myelin Sheath Presynaptic Knobs Direction of Nerve Impulse

The Synapse -Pre & Post synaptic membranes -Synaptic Cleft -Synaptic Vesicles -Neurotransmitters (Ex: acetylcholine, nor-epinephrine, dopamine, serotonin)