Nervous System6th Grade

HealthMr. Springer

Nervous System Fast Facts

The brain weighs about 3 pounds

Gross Picture Alert!

Nervous System Fast Facts

The brain contains about 10 billion cells that regulate:

Your conscious actsEx. Walking, talking, playing the piano

Your involuntary functions Ex. Coughing, blinking, swallowing, breathing

And your emotionsEx. Love, anger

Nervous System Fast Facts

The nervous system requires oxygen to do it’s work.

Ex. 15 seconds without oxygen will cause us to lose consciousness

Ex. 4 minutes without oxygen will cause irreparable damage to the brain and even death

The Job Of The Nervous System

Sends and interprets “messages”

Allows the entire body, inside and out, to work together

Neurons

(Nerve Cell)- specialized cells that carry information from the brain to the body and from the body to the brain

Real life

Microscope images of nerves!

Vocabulary

Central Nervous System- includes the brain and spinal cord, it’s the body’s main control center

Vocabulary

Peripheral Nervous System- includes the nerves that connect the CNS to all parts of the body

Sensory Nerves & Motor Nerves

You have two types of nerves:

Sensory- carries messages from the sense receptors to the brain and spinal cord

Motor- carries messages from the brain to the muscles, glands, and other body structures, resulting in actions

Parts Of The Brain

Cerebrum- it’s the largest part of the brain, it controls your ability to think, memorize, and learn. It also receives messages for your senses (sight, hearing, smell, touch, and taste)

Cerebellum- it controls balance, posture, and coordination.

Medulla- it controls you involuntary muscle actions such as breathing.

Medulla

Cerebellum

Cerebrum

Problems With The Nervous System

MS (Multiple Sclerosis)- degenerative disease in which the protective outer coating of nerves is damaged, thus the nerves no longer work properly

Problems with thinking and memory

Problems With The Nervous System

Parkinson’s – Shaking and stiffness of the arms and legs.

Epilepsy – Seizures, as a result of abnormal electrical activity in brain.

Alzheimer’s – affects mostly older people, it is inflamed areas in the brain and death of neurons (atrophy). Leads to memory loss and dementia

Neck/Spine Injuries

Can lead to paralysis (loss of feeling and mobility in parts of the body)

FACT: The medulla is part of your spinal cord. If you break your neck, you may damage this part of your brain. If this part of your brain is damaged the result can be death because your organs shut down!

Brain Diagram Without Labels

Brain Diagram (W/Labels)

http://www.edhelper.com/teachers/health_Brain_with_Labels.htm

Nervous System Diagram(W/O Labels)

http://www.edhelper.com/teachers/health_Nervous_System.htm

Nervous System Diagram (W/Labels)

http://www.edhelper.com/teachers/health_Nervous_System_with_Labels.htm

Review

At this website, we will connect nerves from different body parts to the section of the spinal cord they connect to.

Notice the parts of the brain that light up.(

That section of the brain controls the body part)

Click Here>>>>>>

(other) Brain Games>>>>