The Brain. l Key component of the Central Nervous System = CNS l Regulates body functions, control, senses, thought, communication, survival.

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Presentation transcript:

The Brain

l Key component of the Central Nervous System = CNS l Regulates body functions, control, senses, thought, communication, survival

CerebrumCerebellum Brain Stem

Central Nervous SystemPeripheralNervousSystem

SPINAL CORD l Extension of the CNS l Begins at the base of the skull l Transmits information l Nerves branch out

l Cranial nerves extend from the brain l Spinal nerves extend from the spinal cord

PERIPHERAL NERVOUS SYSTEM l Bundles of nerves extending from the brain and the spinal column

Cranial Nerves OLFACTORY 2. OPTIC 3. OCULOMOTOR 4. TROCHLEAR 5. TRIGEMINAL 6. ABDUCENS 7. FACIAL 8. VESTIBULOCOCHLEAR 9. GLOSSOPHARYNGEAL 10. VAGUS 11. ACCESSORY 12. HYPOGLOSSAL BLUE = SENSORY WHITE= MOTOR

Basic Brain Anatomy l CEREBRUM l CEREBELLUM l BRAIN STEM –Diencephalon –Midbrain –Pons –Medulla Oblongata

CEREBRAL HEMISPHERES l Right and Left

4 Cerebral Lobes l FRONTAL l PARIETAL l TEMPORAL l OCCIPITAL l Speech & Motor Skills l Sensory l Auditory l Visual

Brain Protection

Cerebrospinal Fluid l CSF l SHOCK ABSORBING l CLEAR AND COLORLESS l SUPPORTS SPINAL CORD

Meneges l 3 Coverings of the Brain l Help to Protect it –Envelop it l Fibrous Tissue

Dura Mater l OUTERMOST l THICKEST

Arachnoid l SPIDER-WEB l LINES INNER SURFACE OF DURA MATER l VERY THIN

Pia Mater l BELOW ARACHNOID l INNERMOST COVERING OF BRAIN AND SPINAL CORD

Subarachnoid Space l BETWEEN ARACHNOID AND PIA MATER l Filled with CSF

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