1. Overview of the Nervous System

2. The Nervous System

3. Sympathetic Nervous System
Preganglionic neurons:
from CNS to ganglia
short fibers
acetylcholine (ACh)
cholinergic
Postganglionic neurons:
from ganglia to effector
long fibers
norepinephrine (NE)
noradrenergic
1:20

4. Parasympathetic Nervous System
Preganglionic neurons:
from CNS to ganglia
long fibers
Acetylcholine (ACh)
cholinergic
Postganglionic neurons:
from ganglia to effector
short fibers
1:4

5. Nervous Tissue Function Classification
converts environmental and internal stimuli into
nerve impulses
stimulates or inhibits cells or glands
Classification
neurons
neuroglia (glia)

6. The Neuron

7. Nerves
Bundles of Axons
Same function
Phrenic nerve
Alcohol Overdose

8. Neuroglia Schwann Cell insulates PNS axons Oligodendrocyte
insulates CNS axons
Astrocyte
regulatory function
potassium balance
nutrients/waste
Microglia
neural immune cells