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ANAT 100 > Module 5 (Support and Protection of Brain) > Flashcards

Module 5 (Support and Protection of Brain) Flashcards

1
Q

What are the 2 protective measures of the brain

A

Meninges
The ventricles

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2
Q

What are meninges

A

3 connective tissue membranes protecting structures of the CNS

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3
Q

What are the 3 meninges

A

Dura mater
Arachnoid mater
Pia mater

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4
Q

What is dura mater and what is it composed of

A

Most superficial and tough of the meninges
Double layer of CT that attaches firmly to the skull

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5
Q

Projections of the dura mater

A

Falx cerebri
Tentorium cerebelli
Falx cerebelli

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6
Q

What is the falx cerebi

A

The longitudinal fissure between the cerebral hemispheres

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7
Q

What is the tentorium cerebelli

A

The transverse fissure between the cerebrum and cerebellum

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8
Q

What is the flax cerebelli

A

The space at the midline of the cerebellum

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9
Q

What is the arachnoid mater

A

Loosely covers the brain

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10
Q

Features of the arachnoid mater

A

Subarachnoid space
Cerebrospinal fluid (CSF)

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11
Q

What is the subarachnoid space

A

Area between the arachnoid mater and pia mater

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12
Q

What fills the subarachnoid space

A

CSF and blood vessels fill the space

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13
Q

What is the pia mater

A

Firmly attached to the cerebral cortex and is the innermost layer of the meninges

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14
Q

What are the ventricles

A

Provide support and protection to the brain

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15
Q

What are the ventricles made up of and what do they contain

A

Made up of 4 hollow spaces that are continuous with each other and the spinal cord
Contain CSF

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16
Q

What are the 3 ventricles

A

Lateral ventricles
Third ventricle
Fourth ventricle

16
Q

What are the lateral ventricles and where are they found

A

Paired, c-shaped spaces deep within the cerebral hemispheres
A portion of the lateral ventricles can be found in each lobe

17
Q

How does the third ventricle connect to the lateral ventricles

A

Interventricular foramina (of Monro)

17
Q

What is the third ventricle and where is it located

A

Single, located in the middle of the diencephalon between the two halves of the thalamus

18
Q

What is the fourth ventricle and where is it located

A

Sits between the pons/medulla and the cerebellum
Continuous with the central canal of the spinal cord and the subarachnoid space

19
Q

How does the fourth ventricle connect to the third ventricle

A

Cerebral aqueduct

20
Q

What is CSF

A

Specialized fluid that bathes and protects structures of the CNS

21
Q

Where is CSF found and produced

A

Contained within and produced inside the ventricles by the choroid plexus

22
Q

What is the choroid plexus

A

A collection of ependymal cells and blood vessels

23
Q

What are the main functions of CSF

A

Provides a buoyancy effect to the brain and spinal cord
Provides support and protection of the CNS, acting as a shock absorber
Serves as a medium for the transport of nutrients, waste, dissolved gasses, and other substances

24
Q

Directional flow of CSF

A

Lateral ventricles
Interventricular foramen
Third ventricle
Cerebral aqueduct
Fourth ventricle
Subarachnoid space

ANAT 100 (16 decks)

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