The Nervous System The Nervous System - Description

1 Two main divisions a Central Nervous System CNS consists of brain and spinal cord b Peripheral Nervous System PNS includes nerves extending from brain and spinal cord ID: 779191 Download

Similar presentations

The Nervous System Central Nervous System Peripheral Nervous System
The Nervous System Central Nervous System Peripheral Nervous System

The Nervous System Central Nervous System Peripheral Nervous System Procedure A starting person will be chosen and will be given an object. Once the teacher gives the signal, the start person will pass the object to their right.

Ch 11: Nervous System & Nervous Tissue
Ch 11: Nervous System & Nervous Tissue

Section 1 – Functions & Divisions of the Nervous System (pp. 386-387). This is your brain…. The Nervous System. And this is your brain – IN ANATOMY!!. Or better yet…. The Nervous System. Functions of the Nervous System.

The Nervous System Central Nervous System
The Nervous System Central Nervous System

The Nervous System Central Nervous System Peripheral Nervous System Procedure A starting person will be chosen and will be given an object. Once the teacher gives the signal, the start person will pass the object to their right.

THE NERVOUS SYSTEM Central Nervous System
THE NERVOUS SYSTEM Central Nervous System

Peripheral Nervous System. Autonomic Nervous System. Allied Health I. Central Nervous System. Communication and coordination system of the body. Seat of intellect and reasoning. Consists of the brain, spinal cord, and nerves.

The Nervous System Central Nervous System
The Nervous System Central Nervous System

The Nervous System Central Nervous System Peripheral Nervous System Procedure A starting person will be chosen and will be given an object. Once the teacher gives the signal, the start person will pass the object to their right.

Nervous System Parts of the Nervous System
Nervous System Parts of the Nervous System

Brain. Spinal Cord. Nerves. Vocabulary to Know . Homeostasis. The regulation of steady, life-maintaining conditions inside an organism, despite changes in its environment . Nerve Cells . Neurons. Basic functioning units of the nervous system .

Nervous System Nervous System Design 2 main section C entral
Nervous System Nervous System Design 2 main section C entral

Nervous System Nervous System Design 2 main section C entral N ervous S ystem P eripheral N ervous System   C entral N ervous S ystem  (CNS) brain and spinal cord.  encased in skull and vertebral column to protect

Nervous System Divisions
Nervous System Divisions

Central Nervous System (CNS). Brain and Spinal Cord. Peripheral Nervous System (PNS). All other nervous tissue throughout the body. Central Nervous System (CNS). Nerve Tissue:. White Matter or Gray Matter.

Nervous System An Introduction
Nervous System An Introduction

The Nervous System: Communication. Neurons are masses of nerve cells that transmit information. Three main components:. (1) Cell Body – contains the nucleus and two extensions. (2) Dendrites – shorter, more numerous, receive information.

The Nervous System Video Anticipation Statements
The Nervous System Video Anticipation Statements

Pain happens only in your head.. Anyone can be hypnotized.. Nerves don’t actually touch each other.. Not feeling pain is a good thing.. Most people can get along just fine with out senses.. You can control your nervous system..

0K - views

The Nervous System The Nervous System

Published bybikerssurebig

1. Two main divisions. a. . Central Nervous System . (CNS) – consists of brain and spinal cord. b. . Peripheral Nervous System . (PNS) – includes nerves extending from . brain and . spinal . cord .

Tags : nervous system neurons brain system nervous brain neurons body spinal central controls cord messages cell axon blood peripheral parts
Embed :
Download Link

Download - The PPT/PDF document "The Nervous System The Nervous System" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.

The Nervous System The Nervous System






Presentation on theme: "The Nervous System The Nervous System"— Presentation transcript:

Slide1

The Nervous System

Slide2

The Nervous System

1. Two main divisions

a.

Central Nervous System

(CNS) – consists of brain and spinal cord

b.

Peripheral Nervous System

(PNS) – includes nerves extending from

brain and

spinal

cord

c. The CNS receives messages from the PNS, interprets them, and then sends out a response.

Slide3

Neurons

2.

Neurons

- nerve cells that transmit messages to and from the spinal cord and

brain

a.

Sensory Neurons

– carry messages FROM body TO CNS

ex. Playing games in computer lab. When light switches to green, a sensory neuron transmits a message from your eye to your brain

Slide4

Neurons

b.

Motor Neurons

– carry message TO body FROM CNS

ex. Your brain sends a signal through a motor neuron to tell your finger to click the mouse.

c

.

Interneurons

– connect neurons

Slide5

3. Structure and Functions of Neurons

1. Dendrites

– receive

information and transmit impulses toward cell

body

2.

Cell Body – large area which contains cell nucleus or power plant

3.

Axon

– transmit impulses away from cell body and toward

axon terminal

4. Axon Terminals – branched structures at the ends of neurons.

6

.

Myelin Sheath – insulating coat which covers the axon. This helps messages relay faster.

Slide6

Neuron

Slide7

The Central Nervous System

1. The

brain

a

. Helps you think, remember, reason, feel emotion,

and

coordinate muscle

movement

b

. Divided into three main parts: cerebrum, cerebellum, brain stem

Slide8

The Central Nervous System

2. The Cerebrum

a

. largest, most complex part of

brain

b

. right and left sides communicate with each other to coordinate movement

. Right

controls left side and vice versa.

c. left hemisphere is for language, reasoning, and critical thinking

d

. right hemisphere is for spatial relationships

Slide9

The Central Nervous System

3. Four lobes (parts) of the cerebrum

a. Frontal Lobe – controls voluntary movements and use of language

b. Parietal Lobe – sensory information, including feelings of heat, cold, pain, touch, and body position in space

c

. Occipital Lobe – Controls sense of sight

d

. Temporal – sense of hearing and smell

Slide10

Lobes of the Brain

Slide11

The Central Nervous System

4. The Cerebellum

a

. second largest part of brain

b

. maintains body’s posture and balance

c. coordinates complex muscle movements like serving a volleyball or playing violin

Slide12

The Central Nervous System

5. The Brain Stem

a. 3 inch long stalk of nerve cells that connect the spinal cord to the rest of the brain

Slide13

The Central Nervous System

b. five parts

c. Medulla Oblongata – regulates heartbeat, breathing rate

d. Pons – regulates breathing and controls muscles of eye and face.

e. Midbrain – controls pupil size and reflexive response of turning your head

f. Thalamus – relays incoming information from the eyes, ears, and pressure receptors in skin

g. Hypothalamus – regulates body temp, appetite, sleep

Slide14

The Peripheral System

1. Broken into two parts

a. Autonomic Nervous System – controls involuntary functions such as digestion and heart rate

- you cannot control this; it is automatic! (autonomic

)

b

. Somatic Nervous System – voluntary responses that are

under

your control

feeling

and itch on your skin and scratching it

Slide15

The Peripheral System

2. Autonomic Nervous System

a

. Broken down into two smaller networks

b. Sympathetic nervous system – kicks in when you are startled. Messages are sent that increase your heart rate. Also, blood vessels dilate to allow for greater blood flow.

-

“Fight or flight response”

-

Example… you are riding in a car and a deer jumps

out

in front of you. Think about how you feel. Your

body prepares

you to make a sudden reaction.

Slide16

The Peripheral System

c. Parasympathetic nervous system – opposite of sympathetic nervous system

- slows heartbeat, relaxes blood vessels, lowers blood pressure

Slide17

Problems of the Nervous System

1. Headaches – caused by muscle tension, eyestrain, sinus infection, dehydration, or food allergies

2. Head injuries

a

. concussion – a temporary loss of consciousness

b

. contusion – bruising of brain tissue that causes swelling

Slide18

Problems of the Nervous System

3. Spinal Injuries

a. swelling of spinal cord tissue can result in temporary loss of nerve function

b

. if spinal cord is severed, you may become paralyzed.

Slide19

Problems of the Nervous System

4. Meningitis – inflammation of the spinal and cranial meninges caused by a virus or bacteria

a. symptoms include fever, headache, light and sound sensitivity, and neck stiffness.

b. can result in death

Slide20

How to care for/prevent these problems:

1. Eat a well-balanced diet, exercise regularly, get lots of sleep!

2. Wear protective devices – helmet, seat belt

3. Stay away from drugs and alcohol!!!

Slide21

Slide22

Slide23