The Brain - Overview

[Pages:30]Brain 101

The Neurotypical Brain

Brain 101

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After completion of this module,

the learner will be able to:

Identify:

the basic structures of the brain: hemispheres, lobes, and

levels.

the basic structures and functions of neurons, axons and

dendrites.

the basic systems of the brain ? physical, chemical, and

electrical.

Explain:

neurotypical development of the brain. the basic functions of each lobe.

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Pre-Quiz ? Part 1

Label the Brain

True or False

___F_ 1. The average brain weighs 7 pounds.(3.3 lbs)

___F_ 2. The brain is attached to the skull. (FLOATS IN CSF)

__T__ 3. The corpus callosum connects the two hemispheres of the brain.

___T_ 4. There are four lobes in each hemisphere.

__T__ 5. The brain floats in cerebrospinal fluid.

__T__ 6. Neurons are the basic brain cells.

__T _ 7. The brain communicates via chemicals. _F __ 8. Neurotransmitters pass directly from the axon

to the dendrite.MAY PASS AXON TO AXON, AXON TO

DENDRITE AND DENDRITE TO DENDRITE

__T__ 9. The brain continues to grow new neurons after birth.

__T_ 10. Each lobe of the brain has specific functions.

____FRONTAL_______

___TEMPORAL_______ __BRAIN STEM______

____CEREBELLEM____

____PARIETAL_______ ___OCCIPITAL________

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Pre-Quiz ? Part 2

For each statement, decide whether it is a function of the:

__1__ 1. Breathing __3__ 2. Vision ___6_ 3. Judgment __5__ 4. Language __2__ 5. Balance __6__ 6. Attention __4__ 7. Goal Setting __4__ 8. Touch Perception __2__ 9. Coordination __5_ 10. Memory Acquisition

1. Brain Stem 3. Occipital Lobes 5. Temporal Lobes

2. Cerebellum 4. Parietal Lobes 6. Frontal Lobes

__4_ 11. Sensory Integration __6_ 12. Time Perception __1_ 13. Swallowing __3_ 14. Recognition of Printed Words _6__ 15. Control of Emotional Response _5__ 16. Hearing Ability __6_ 17. Inhibition __6_ 18. Initiation __1_ 19. Startle Response __5_ 20. Categorization of Objects

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The Brain - Overview

The Average Brain:

Weighs 3.3 pounds.

Is protected by layers:

Hair. Skin. Cranium (Skull). Meninges. Maters.

Has 100 billion Neurons.

Has 100 trillion Snyapses.

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The Skull & Meninges

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The Hemispheres

There are:

Left

2 Hemispheres:

Left. Right.

Connected by:

1 Corpus Callosum.

Right

Corpus Callosum

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Corpus Callosum

Major tract of "White Matter"

connecting the left and right hemispheres.

Composed of approximately

200 million nerve fibers.

Contain both mylineated and

unmylineated axons.

Majority of connections are

between the cortical association areas.

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