| dc.description.abstract | The gross and microscopic anatomy of the testis of buck has not been
elucidated fully in Bangladesh. The objectives of this research were to study
the gross anatomy including length, width, weight, size, shape, and
circumference; and the microscopic structures of the testes of buck with
special emphasis on the seminiferous tubules. The present study was
designed to make a quantitative comparison of the various cellular types in
the seminiferous tubules of the testes. For the purpose testes of four adult
bucks were used and biometrical values were recorded. The mean values of
length, width, weight and circumference of the left testes in bucks were
6.71
0.11cm, 3.90
0.01cm, 66.85
0.78 gm and 13.41
0.17cm
respectively. The mean values of length, width, weight and circumference of
the right testes in bucks were 6.26
0.04cm, 3.80
0.02cm, 66.47
0.79gm
and 13.12
0.06 cm gm respectively. For microscopic studies tissue
samples were excised from the testes, fixed in Bouins solution and
embedded in paraffin .Cross sections 6 um thickness was stained with
haematoxylin and eosin and evaluated with quantitative techniques. The
testis was encapsulated by tunica albuginea which was a layer of
interweaving, coarse collagenous fibers, a few elastic fibers and
myofibroblast. Beneath the tunica vasculosa delicate connective tissue was
inconspicuous strands continued from the tunica albuginea toward the
mediastinum testis. The testicular parenchyma was divided into testicular
lobules by the septula testis containing convoluted seminiferous tubules.
Leydig cells or interstitial cells were located in the intertubular spaces. The
findings in this thesis suggest that there were variations between the left and
right testis of buck and left testis was slightly larger than right testis. | en_US |
