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Mr. Springer

The brain weighs about 3 pounds
Gross Picture Alert!

The brain contains about 10 billion cells that regulate:
Your conscious acts
Ex. Walking, talking, playing the piano
Your involuntary functions
Ex. Coughing, blinking, swallowing, breathing
And your emotions
Ex. Love, anger

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

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!

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

 Peripheral Nervous
Systemincludes the nerves that connect the
CNS to all parts of the body

 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

 Cerebrumit’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)
 Cerebellumit controls balance, posture, and coordination.
 Medulla it controls you involuntary muscle actions such as breathing.

Cerebrum
Cerebellum
Medulla

 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


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

 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.co
m/teachers/health_Nerv ous_System.htm

Nervous System
Diagram (W/Labels)
 http://www.edhelper.com/t eachers/health_Nervous_
System_with_Labels.htm

 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)
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(other) Brain Games>>>>