Science Starter

Describe a time when you had to react quickly to something.

Science Starter

The Nervous SystemCommunication and Control

I will be able to describe the relationship between my central nervous system and my peripheral nervous system.

I will know the three parts of my brain and list one function of each.

I will understand the difference between the left and right sides of my brain.

Objectives

Central Nervous System: The brain and the spinal cord.

Peripheral Nervous System: All the parts of the nervous system except for the brain and the spinal cord.

Two Systems in One

The central nervous system processes and responds to all messages coming from the peripheral nervous system.

Central Nervous System

Neurons send messages to my brain about the world around me.

Neuron: A nerve cell that is specialized to receive and conduct electrical impulses.

Peripheral Nervous System

Dendrites are the “branches” that receive signals and send them to the nerve cell body.

Neurons are connected to each other by axons and impulses travel through them and eventually end up in the brain.

Neurons

Nerve: A collection of nerve fibers (axons) through which impulses travel between the central nervous system and other parts of the body.

Nerve

Dendrites receive information from the world around me.

This signal is sent to nerve cell body and transferred into my axon

It travels though a series of axons and nerve cells before “linking up” with my spinal cord.

It then moves up to my brain where it is processed and interpreted into the sensations I experience.

Follow along with Mr. Wager as he leads you through some visual concepts of the nervous system.

Visual Concepts

Long-term memory enables us to recall events that happened to us long ago. These memories can be triggered by a stimulus, such as a song or a smell, or they can be deliberately recalled. Recalling memories helps us to refresh them and makes them last a lifetime.

In your journals, write down you earliest memory, your happiest recollection, or your most embarrassing moment.

Thanks for the Memories

Describe the relationship between your central nervous system and your peripheral nervous system.

The central nervous system processes and responds to all messages coming from the peripheral nervous system.

Science Starter

Synapses form in a human baby’s brain at the rate of 3 billion a second. At 8 months old, a baby’s brain has about 1,000 trillion connections. After that, the number begins to decline. Half the connections die by the time the child reaches age 10, leaving about 500 trillion connections.

Is That a Fact!

Watch the Discovery Education video and be ready for discussion

Senses and the Nervous System Working Together (8 minutes)

Discovery Video

Cerebrum: largest part of my brain where memories are stored, voluntary movements are controlled, and allows you to sense touch, light, sound, odors, taste, pain, heat and cold.

Three Parts of my BrainCerebrum

Cerebellum: Second largest part of my brain that is responsible for movement and balance.

Three Parts of my Brain

Cerebellum

Medulla: the part that connects to my spinal cord. It controls involuntary processes, such as blood pressure, body temperature, heart rate, and involuntary breathing.

Three Parts of my Brain

Medulla

Left Hemisphere Right Hemisphere

SpeakingReadingWriting

Problem Solving

Music Art

Emotions Drama

Left vs. Right Brain

Watch the movie Lorenzo’s Oil a true story.

Be prepared to discuss stem cell research.

Lorenzo’s Oil

Which side of your brain do you think fits you better? Explain.

Reflection Question

What is the role of the cerebellum part of your brain?

Science Starter

Watch the Discovery Education video and be ready for discussion

Sixth Sense for Danger: Can our Nervous Systems Predict the Future? (8 minutes)

Discovery Video

Echo read the sections on the nervous system in the text book (pages 84 and 85)and write the summary notes.

Central Nervous System Read

What is the role of the cerebrum part of your brain?

Reflection Question

What is the role of the medulla part of your brain?

Science Starter

Spinal Cord Injury:◦ A spinal cord injury stops messages from getting

to a location on the body to the brain. ◦ This would leave you paralyzed and unable to feel

touch, pain and temperature in that area.

Nervous System Problems

Alzheimer’s: A disease where nerve cells in the brain

begin to die and you lose brain matter (tissue).

http://www.alz.org/brain/01.asp

Nervous System Problems

Movement Disorders: Parkinson’s, Muscular Dystrophy and Multiple Sclerosis are common neurological disorders.

They are the result of the stripping of the myelin sheath that surrounds the axons.

Nervous System Problems

Follow the instructions from Mr. Wager and create your brain hat.

The Brain Hat

What does the left side of my brain help me do?

Reflection Question

Describe what life would be like if you were living it in a wheelchair?

Science Starter

This test is over the knowledge and skills you have gained over the course of the school year, along with the new information you have learned from the nervous system.

Test: Cumulative/Nervous System

Stay in your seat and quietly raise your hand.

I will come and collect your test. Answer the reflection question You may work on your brain hat,

missing work, other homework, or read. You may not:

◦ Get out of your seat◦ Talk◦ Get out of your seat◦ Talk

When you are Done

If you could do anything over this school year, what would you do over and why?

Reflection Question