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The location of projection neurons to the biceps brachii muscle in the telencephalon of the pigeon
Author(s) -
Park J. H.,
Ahn J. H.,
Choi S. Y.,
Cho J. H.,
Lee T.K.,
Kim I. H.,
Lee J.C.,
Choi J. H.,
Hwang I. K.,
Lee Y. J.,
Lee E.,
Park S.,
Lim J.,
Seo K.,
Won M.H.
Publication year - 2017
Publication title -
anatomia, histologia, embryologia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.34
H-Index - 35
eISSN - 1439-0264
pISSN - 0340-2096
DOI - 10.1111/ahe.12297
Subject(s) - cerebrum , biceps , anatomy , biceps brachii muscle , biology , central nervous system , neuroscience
Summary Few studies regarding the anatomical distribution of motor neurons innervating muscles of the arm have been demonstrated in avian brains. The purpose of this study was to finely determine the localization of cerebral neurons innervating the biceps brachii muscle in the pigeon. The cholera toxin B subunit ( CTB ) was employed as a retrograde tracer to determine the location of neurons controlling the biceps brachii muscle in the telencephalon following intramuscular injection in male pigeons ( n = 7), which were killed 14 days after intramuscular injection with CTB . We found that CTB ‐labelled neurons were located contralaterally in the hyperpallium apicale of the rostral telencephalon and that most of the CTB ‐labelled neurons were pyramidal in shape. This study shows that CTB is easily taken up by nerve terminals which innervate the biceps brachii muscle of the pigeon and that cerebral motor neurons controlling the biceps brachii muscle are located in the hyperpallium apicale.