| Summary: | The cerebellum which is widely used in studies related to the motor system is
responsible for maintaining balance, muscle tone and coordination. In present study, we
aimed to evaluate the cerebellum at different incubation periods in terms of stereology,
embryology and histomorphometry. Twenty-four Babcock White Leghorn chick
embryos were used. All data regarding embryo, egg and cerebellum were measured and
calculated. All histologic and histomorphometric examinations were evaluated on the
preparations stained with Crossmon"s trichrome stain, Kluver-Barrera stain, and silver
stain. It was determined that the cerebellum weight, which was 0.0191±0.0064 g on the
10th day of incubation, increased gradually towards to hatching day. On the 10th day, it
was seen that a four-layered primitive substantia grisea structure began to form. While
primary foliation seen on the 10th day, secondary foliation started on the 13th day. On
the 16th day, Purkinje cells forming the stratum gangliosum were arranged almost in
a single row. At day 21th, the general structure of the cerebellum was almost similar to
that of the adult cerebellum. While the stratum moleculare and granulosum thicknesses
were measured in all embryonic periods, the stratum gangliosum thickness could be
measured on the 16th and hatching days. As a result, it was thought that the data obtained
from this study might be a reference for studies on the cerebellum and especially on
motor control disorders.
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