Meninges Flashcards

1
Q

Membranous coverings of the brain and spinal cord

A

Meninges

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2
Q

3 layers of Meninges (outer to inner)

A

Dura mater
Arachnoid mater
Pia mater
(DAP)

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3
Q

Outermost layer and is directly beneath the skull and vertebral column

A

Dura mater

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4
Q

Unique feature of dura mater

A

Inextensible

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5
Q

2 connective tissue sheets of cranial cavity

A

Periosteal layer

Meningeal layer

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6
Q

Connective tissue sheet found in the inner surface of the cranium

A

Periosteal layer

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7
Q

The ONLY connective tissue layer present in the vertebral column

A

Meningeal layer

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8
Q

Responsible for venous vasculature of the cranium; found between the two connective tissue layer

A

Dural venous sinuses

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9
Q

Divides the cranial cavity into several compartments

A

Dural reflections

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10
Q

Meningeal layer of the dura mater that folds inward

A

Dural reflections

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11
Q

Divides the supratentorial and infratentorial compartments of the brain

A

Tentorium cerebelli

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12
Q

Descends vertically in the longitudinal fissure between the left and right cerebral hemisphere

A

Falx cerebri

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13
Q

Dura mater vasculature

A

MMA (Middle Meningeal Artery/Vein)

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14
Q

Innervation of dura mater

A

Trigeminal nerve (V1-V3)

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15
Q

Avascular connective tissue layer of the brain

A

Arachnoid mater

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16
Q

Innervation of Arachnoid mater

A

NO innervation

17
Q

Contains CSF

A

Subarachnoid space

18
Q

Small projections of the arachnoid mater that produces CSF

A

Arachnoid granulations

19
Q

The ONLY covering that follows the gyri and fissures of the brain

A

Pia mater

20
Q

Unique feature of the pia mater

A

Highly vascularized

21
Q

3 meningeal signs

A

Neck stiffness/ nuchal rigidity
Brudzinski sign
Kernig sign

22
Q

Highly sensitive for meningitis

A

Neck stiffness/Nuchal rigidity

23
Q

Highly SENSITIVE

poor specificity

A

Brudzinski sign

24
Q

Extension of the knee manifests as resistance and pain

A

Kernig sign

25
Q

High SPECIFICITY

low sensitivity

A

Kernig sign

26
Q

Reflex flexion manifests as resistance and pain

A

Brudzinski sign