After severing the sympathetic trunk, the cells of its origin undergo complete disintegration within
a year.
After severing the cervical sympathetic trunk, the cells of the cervical sympathetic ganglion undergo transneuronic degeneration.
The spinal cord. Changes found in the segment Th1 – Th4 in sheep III and IV closely resembled those
seen in the stellate ganglion (Figures 6, 7). Changes in sheep I and II were the same as described in the
previous paper (5).
The nervus caroticus internus. In all the sheep a myelinated fasciculus was found in this nerve
(Figure 8), which proves that the nervus caroticus internus contains a fasciculus of fibres which run
from the front to the rear in the anterior sympathetic trunk (5).
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