| |
Sympathetic Nervous
System |
|
Parasympathetic Nervous
System |
| 1 |
Contains nerve fibers
on which there is no voluntary control. (Involuntary nerve fibers.) |
1 |
---------- same ---------- |
| 2 |
Nerve fibers emerge from
the brain or spinal cord. |
2 |
---------- same ---------- |
| 3 |
The final nerve fibers
supplying organ do not have thick myelin sheath, thus sometimes
called non-myelinated fiber. |
3 |
---------- same ---------- |
| 4 |
The ganglia lie close
to the vertebrae/spinal cord. |
4 |
The ganglia are embedded
in the wall of effector itself. |
| 5 |
Pre-ganglionic fibers
are short. |
5 |
Pre-ganglionic fibers
are long. |
| 6 |
Post-ganglionic fibers
are long. |
6 |
Post-ganglionic fibers
are short. |
| 7 |
Sympathetic fibers are
generally activatory. (i.e. increase rate of heart beat.) |
7 |
Parasympathetic fibers
are generally inhibitory (i.e. decreases rate of heart beat). |
| 8 |
Functions antagonistic
to para-sympathetic fibers. |
8 |
Functions antagonistic
to sympathetic fibers.. |
| 9 |
Terminals of post-ganglionic
fibers secrete adrenaline or epinephrin (adrenergic fibers). |
9 |
Terminals of post ganglionic
fibers release acteylcholine (cholinergic fibers.) |
