Lecture Notes BB I TB1 L3

3. The human nervous system

1. Neurons (about 100,000,000,000)




6. Anatomical Terminology


2. Glia cells – support cells
o astrocytes –
important for
uptake of
neurotransmitters +
coupling brain
activity with
increases in blood 7. Gyri and Sulci
o oligodendrocytes – immune reactions (eat o the brain is
dead cells) + produce myelin – folded
communication of information => keeping the o Sylvian
brain healthy fissure –
o ratio of neurons to glial cells: 1:3 separates
the
3. Central and peripheral nervous system temporal
o neuro lobe from
ns outside the frontal and parietal
central and o Central sulcus – separates the
peripheral precentral gyrus from the central gyrus
nervous system – (border between the frontal lobe and
autonomic the parietal lobe)
nervous system
(sympathetic 8. Lateral surface of the brain
nervous system – getting us ready for action &
parasympathetic nervous system – slow down
digestion)

4. Grey matter and White matter
o grey matter –
neurons
o white matter –
axons -> 9. Ventral surface of the human brain
sending
connection
from one part
to another

5. The lobes of the cerebrum


10. More Anatomical Terminology – cut up
the brain