THE NERVOUS SYSTEM. Brain WHAT PARTS DO YOU KNOW THAT ARE IN THE NERVOUS SYSTEM? Spinal Cord Peripheral Nerves.

Slides:

Advertisements

Similar presentations

Histology of Nervous Tissue

Advertisements

THE NERVOUS SYSTEM.

Overview of the Nervous System

The Nervous System Ch. 9 Lesson 2 Pages The Command Center of the Body The nervous system: Is your body’s control center Carries messages to.

Lecture packet 9 Reading: Chapter 7

Neurons Neurons and neuroglia (multiple sclerosis and neuroglia) Where are neurons in the body? Types of neurons and their functions How do neurons work?

29.2 Nervous System and Neurons

THE NERVOUS SYSTEM.

The Nervous System Medical Biology Mission Hills High School.

Topic 1: It’s My Body Part 2: Nervous System. Human Organ Systems SkeletalMuscular CirculatoryImmune RespiratoryDigestive ExcretoryReproductive NervousEndocrine.

Neurons and the Nervous System

Human Responses Nervous system Endocrine System (hormones)

Chapter 9 Alcohol Lesson 2 The Nervous System Next >> Click for:

Topic 1: It’s My Body Part 2: Nervous System.

Lesson Overview 31.1 The Neuron.

The Nervous System Medical Biology Mission Hills High School.

The Nervous System. Neurons: specialized cells of the nervous system. 3 major regions: – 1) Dendrites: receive signals from other neurons – 2) Cell Body:

The Nervous System.

Nervous System Central Nervous System: consists of the brain and spinal cord. It reacts to internal and external stimuli. Peripheral Nervous System: Consists.

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.

The Nervous System.

AP Biology Nervous Systems Part 1.

Movie: Nervous System (27:00min)

What life function does the nervous system help to carry out?

Human Anatomy & Physiology NERVOUS SYSTEM Biology – Chapter 35 1.

Nervous System.

Nervous System.

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

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

Nervous System & Neurons

The Nervous System. Key Concepts Muscle Motor Neuro n Interneuron Skin receptors Sensory Neuron Brain Know the function and divisions of the nervous system.

The Human Body The Nervous System

The Nervous System. Central Nervous System  All nerves encased in bone make up the central nervous system (CNS). The central nervous system is responsible.

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

 Carry impulses from the Central Nervous System to perform muscle movement  Motor Neurons are known as the control muscle  They directly or indirectly.

Biology 211 Anatomy & Physiology I

The Nervous System Read 35.2, take notes, and answer questions 1-4 on pg 900 Read 35.3, take notes and answer questions 1-5 pg 904 Due Tuesday 2/10.

Biology 211 Anatomy & Physiology I Nerve Histology.

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

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

The Structure of the Nervous System. Divisions of the Nervous System.

Neurons and Neurotransmitters. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Central Nervous System (CNS)

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

The Nervous System Control Center for Maintaining Homeostasis.

Susan Capasso, Ed.D., CGC St. Vincent’s College Suggested Lecture Presentation Copyright © 2009 Pearson Education, Inc. Chapter 7 Neurons: The Matter of.

Chapter 17 The nervous system.

Histology of Nervous Tissue

The Nervous System. iction/drugs/mouse.html.

Introduction to Cognitive Neuroscience Topic 2: The Nervous System.

Part 1 Biology 12.  Neurons  Gathers & transmits electro-chemical signals DID YOU KNOW????  Neurons cannot be repaired  Some last a life time  Approximately.

Nervous System Grade 10. What is the Nervous System? In the simplest form, the nervous system is an organ system specifically designed to sense the environment.

Our electrochemical controls

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

AP Biology Nervous Systems Part 1.

Neurons Neurons and neuroglia (multiple sclerosis and neuroglia) Where are neurons in the body? Types of neurons and their functions How do neurons work?

THE NERVOUS SYSTEM 35-2 BIO 1004 Flora. NERVOUS SYSTEM  Nervous system – controls and coordinates functions throughout the body and responds to internal.

Brain WHAT PARTS DO YOU KNOW THAT ARE IN THE NERVOUS SYSTEM? Spinal Cord Peripheral Nerves.

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

Nervous System Test Review. Nervous System Review Collect Information Analyze Information Initiate Response Central Nervous System Peripheral Nervous.

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 Notes Part 3. EVEN MORE INTERESTING NERVOUS SYSTEM FACTS The human brain alone consists of about 100 billion neurons. If all these neurons.

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

THE NERVOUS SYSTEM. Brain WHAT PARTS DO YOU KNOW THAT ARE IN THE NERVOUS SYSTEM? Spinal Cord Peripheral Nerves.

The Nervous System Mission Hills High School. Functions of the Nervous System Sensory Sensory Integrative Integrative Motor Motor.

Why does your body need a communication system?

Ms. Scribner’s Biology class

THE NERVOUS SYSTEM.

Presentation transcript:

THE NERVOUS SYSTEM

Brain WHAT PARTS DO YOU KNOW THAT ARE IN THE NERVOUS SYSTEM? Spinal Cord Peripheral Nerves

What makes up the brain, the spinal cord or your peripheral nerves? Neurons are “the cell” Cell body Nucleus Axon Dendrite What do you think surrounds the cell? What other organelles would be needed?

How are neurons connected? Synapses!!

There are lots of proteins and chemicals in your body to do the work Why is it important that it is an electrical current?

Why are neurons connected?

More neuron connections!

AXON The synapse - where the action happens The next cell’s plasma membrane What is this in the membrane? Transport protein Close up look at your synapse

How does the Synapse carry the signal? 1.Electrical current travels down the axon 2.Vesicles with chemicals move toward the membrane - what is that called? 3.Chemicals are released and diffuse toward the next cell’s plasma membrane 4.The chemicals open up the transport proteins and allow the signal to pass to the next cell - what type of diffusion is this?

The synapse carries a signal from cell to cell

Supporting cells or glia a. astrocytes-metabolic and structural support in CNS b. oligodendrocytes-myelin sheath in CNS c. Schwann cells-myelin sheath in PNS d. blood brain barrier-many tight junctions between endothelium cells in capillaries of the brain induced by astrocytes

Are all neurons equal in size? Brain vs spinal cord vs peripheral nerves? About how many neurons are in the human brain?100 billion 1 billion around 15 feet About how many neurons are in the spinal cord? How long do you think the longest axon in the world is?

How many synapses are in one neuron? 1,000 to 10,000!!

This science is called Neurobiology Looking at the actual cells - how do they work? Looking at the connections - how and when do they work? Looking at what can change normal cells and connections Looking at diseases that occur in the brain One of the largest areas still unknown The you that is you is because of your neurons connecting!

What do you think can change neurons and their connections? Accidents Drugs Alcohol Disease

Accidents Physical injury of your neurons

Drugs and alcohol bind important receptors on neurons

Repeated binding causes the neuron to die

Drugs = neuron death

Alcohol damages dendrites - can repair after abstinence Alcohol blocks receptors and slows down transmission

Parkinson's Disease ALS - Lou Gehrig’s Disease Huntington’s Disease Multiple Sclerosis Alzheimer's Cerebral Palsy Epilepsy ? SIDS

100 Billion or so neurons - what’s the problem with some of them dying? Cells multiply all the time - will your neurons? Does everyone react the same way to accidents, or drugs and alcohol? Do all organisms react the same to all stimulus? Which of your activities use your neurons?

What if neurons die here? or here