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Page 1: CNS anatomy - Minerva · CNS anatomy. Contents •OVERVIEW need to read up Components of the CNS - Spinal cord –Meninges –Dural folds and sinuses –CSF –Blood supply circle

CNS anatomy

Page 2: CNS anatomy - Minerva · CNS anatomy. Contents •OVERVIEW need to read up Components of the CNS - Spinal cord –Meninges –Dural folds and sinuses –CSF –Blood supply circle

Contents

• OVERVIEW need to read up

Components of the CNS

- Spinal cord

– Meninges

– Dural folds and sinuses

– CSF

– Blood supply circle of Willis

Page 3: CNS anatomy - Minerva · CNS anatomy. Contents •OVERVIEW need to read up Components of the CNS - Spinal cord –Meninges –Dural folds and sinuses –CSF –Blood supply circle

PNS

Nervous system (NS)

Somatic NS

(Voluntary)Autonomic NS

(Automatic)

Somatic Receptors

Somatic effectors

(skeletal muscle)

Visceral receptors

Autonomic effectors

CNS

P S

Page 4: CNS anatomy - Minerva · CNS anatomy. Contents •OVERVIEW need to read up Components of the CNS - Spinal cord –Meninges –Dural folds and sinuses –CSF –Blood supply circle
Page 5: CNS anatomy - Minerva · CNS anatomy. Contents •OVERVIEW need to read up Components of the CNS - Spinal cord –Meninges –Dural folds and sinuses –CSF –Blood supply circle

Spinal cord

• Lies in the spinal cavity

• From Foramen magnum to L1

• 45cm / 18 inches

• 2 bulges at cervical and lumbar region

•Grey & white matter•Divisions•Funiculi tracts•Spinal roots (Dorsal –sensory, Anterior - motor)

Functions-Passage for info to brain- spinal reflexes

Page 6: CNS anatomy - Minerva · CNS anatomy. Contents •OVERVIEW need to read up Components of the CNS - Spinal cord –Meninges –Dural folds and sinuses –CSF –Blood supply circle

Meninges

• Protective coverings

Spaces- Epidural- Subdural- Subarachnoid

Page 7: CNS anatomy - Minerva · CNS anatomy. Contents •OVERVIEW need to read up Components of the CNS - Spinal cord –Meninges –Dural folds and sinuses –CSF –Blood supply circle
Page 8: CNS anatomy - Minerva · CNS anatomy. Contents •OVERVIEW need to read up Components of the CNS - Spinal cord –Meninges –Dural folds and sinuses –CSF –Blood supply circle

The dural folds & sinuses

Page 9: CNS anatomy - Minerva · CNS anatomy. Contents •OVERVIEW need to read up Components of the CNS - Spinal cord –Meninges –Dural folds and sinuses –CSF –Blood supply circle
Page 10: CNS anatomy - Minerva · CNS anatomy. Contents •OVERVIEW need to read up Components of the CNS - Spinal cord –Meninges –Dural folds and sinuses –CSF –Blood supply circle
Page 11: CNS anatomy - Minerva · CNS anatomy. Contents •OVERVIEW need to read up Components of the CNS - Spinal cord –Meninges –Dural folds and sinuses –CSF –Blood supply circle

Blood supply to the brainSupply the different territories of the brain

Page 12: CNS anatomy - Minerva · CNS anatomy. Contents •OVERVIEW need to read up Components of the CNS - Spinal cord –Meninges –Dural folds and sinuses –CSF –Blood supply circle
Page 13: CNS anatomy - Minerva · CNS anatomy. Contents •OVERVIEW need to read up Components of the CNS - Spinal cord –Meninges –Dural folds and sinuses –CSF –Blood supply circle
Page 14: CNS anatomy - Minerva · CNS anatomy. Contents •OVERVIEW need to read up Components of the CNS - Spinal cord –Meninges –Dural folds and sinuses –CSF –Blood supply circle
Page 15: CNS anatomy - Minerva · CNS anatomy. Contents •OVERVIEW need to read up Components of the CNS - Spinal cord –Meninges –Dural folds and sinuses –CSF –Blood supply circle

Vascular territories


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