AUTHOR’S ABSTRACT OF THIS PAPER ISSUED 
BY THE BIBLIOGRAPHIC SERVICE, JANUARY 16 
EXPERIMENTAL STUDIES ON THE HISTOGENESIS 
OF THE SYMPATHETIC NERVOUS SYSTEM 
ALBERT KUNTZ 
Department of Anatomy, Saint Louis University School of Medicine 
TEN FIGURES 
CONTENTS 
Mtr Oe Geil One 8. sete eae. Soe aes ia ies WL Resa a eas ee 1 
Mia tenis deimiG boc setts searches ayy poses o Srepnd aosehctt naa Ale oleate ho eee are 2 
The genetic relationship of the sympathetic to the cerebrospinal nervous 
SVS UCM Re eran ersten not eters. ae ONE ease Siete sloveaust ashi sotare eleher oe eters + 
The histogenesis of the sympathetic trunks and the prevertebral plexuses.. 8 
Hi ce ONIN ee mC UHC ET Uber s.. # be 3 chaiys igteraa ais ope secured Seiwa a erste aidoiat ane 8 
seme vente piel WplexUSGs 02... 55 te to sehen a auccackalt aslo stl okdens tase «panes 13 
The neurilemma of the efferent fibers of the spinal nerves.................. 14 
The histogenesis of the vagal sympathetic plexuses................02200005 17 
PENA STOLE CEC eetY ERIE tok otis: fines SUR bles SET ee Sted tence k Sa WEIN e GS 22 
nS CRTTE DST URE ee Cee rape ee ee OY By AIS ate Be ee ee Soo ee ee gon Re TP 24 
LATE RET AEA Vig) COVE I A a a eA eae eR Np ee ee) een te eer 25 
INTRODUCTION 
Studies on the histogenesis of the sympathetic nervous sys- 
tem involve the fundamental principles governing the differen- 
tiation of nervous tissue. By reason of this fact, the literature 
bearing on the development of the sympathetic system in verte- 
brates has grown very large. In general, the sympathetic has 
been regarded as genetically and functionally related to the 
cerebrospinal nervous system. The investigators who have 
supported this theory agree in deriving the elements which give 
rise to the sympathetic from the cerebrospinal nervous system. 
However, their studies reveal no general agreement either 
regarding the exact sources of the cells which give rise to sympa- 
thetic neurons or the pathways along which these elements are 
displaced into the primordia of the sympathetic nervous system. 
On the other hand, there has long been a tendency on the part of 
1 
