4. brain Flashcards
1
Q
central nervus system vs peripheral nervous system
A
CNS
- brain and spinal chord
PNS
- cranial and spinal nerves
2
Q
inward folds of brain
A
sulci
3
Q
outward folds of brain
A
gyri
between sulci
4
Q
purpose of folds in the brain
A
increase surface area
- cell bodies (neurons) exist in grey matter of brain
5
Q
sulcus of the brain
A
central, lateral and longitudinal
6
Q
3 main parts of the brain
A
cerebrum (superior)
cerebellum (posterior/inferior)
brain stem
7
Q
area of white matter connecting right and left hemispheres
A
corpus callosum
8
Q
majority of neurons found in
A
cerebellum
- large amount in small region
- highly folded
9
Q
~ number of neurons
A
80-100billion neurons
10
Q
alzhemeirs causes degeneration where
A
mostly sulci and gyris
