Chapter 3 - 'Complexity Of The Brain' Flashcards
1
Q
What are the darker areas of the brain known as?
A
‘Grey matter’
2
Q
What are the lighter areas of the brain known as?
A
‘White matter’
3
Q
What is grey matter mainly composed of?
A
Neurons.
4
Q
What is white matter mostly composed of?
A
Nerve fibers.
There’s a difference between neurons and nerve fibers
5
Q
What gives white matter it’s lighter appearance?
A
The fat in myelin.
6
Q
What are the four connected fluid filled cavities called in the brain?
A
Ventricles.
7
Q
How many nerves are in the brain?
A
86 billion
8
Q
To protect the central nervous system, it is covered in?
3 things.
A
Bones
Cerebrospinal fluid
Meninges (transparent skin like membranes)
9
Q
What is the liquid surrounding the brain and spinal cord?
A
‘Cerebrospinal Fluid’
