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A&P II > 2.1 The Brain > Flashcards

2.1 The Brain Flashcards

1
Q

What are the two main divisions of the central nervous system?

A

brain
spinal cord

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2
Q

What are the divisions of the brain?

A

cerebrum
brainstem
diencephalon
cerebellum

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3
Q

Why are protective structures important for the brain?

A

because neurons are not replaceable

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4
Q

What protects the brain?

A

skull
meninges
cerebrospinal fluid
blood brain barrier

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5
Q

How many ventricles are inside of the brain?

A

four

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6
Q

What are ventricles within the brain?

A

cavities that are filled with CSF

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7
Q

What are the names of the ventricles in the brain?

A

two lateral
third
fourth

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8
Q

What is important about the fourth ventricle?

A

drains into the central canal of the spinal cord

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9
Q

What are the meninges?

A

three layers of connective tissue membranes that cover and protext CNS organs and enclose CSF

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10
Q

What is the name of the outer meninx?

A

dura matter

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11
Q

What is the middle layer of the meninx?

A

arachnoid meninx

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12
Q

What is the general description of the dura?

A

leathery double layered membrane

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13
Q

What is the general description of the arachnoid meninx?

A

loose layer

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14
Q

What separates the dura from the arachnoid meninx?

A

subdural space

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15
Q

What separates the arachnoid from the pia mater?

A

subarachnoid space

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16
Q

What is contained within the subarachnoid space?

A

blood vessels
CSF

17
Q

What is the inner layer of the meninges?

A

pia mater

18
Q

What is a general description of the pia mater?

A

thin connective tissue tightly attached to the brain

19
Q

What is cerebrospinal fluid?

A

special fluid that is formed in the walls of the ventricles from blood plasma permeating through the choroid plexus

20
Q

What is the choroid plexus?

A

network of blood vessels within the ventricles

A&P II (95 decks)

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