Histological study of the quail spleen (Coturnix coturnix coturnix ) Luay O.Hamza , Khawla J.Balash

Abstract

The present study revealed that the spleen of the quail is coated by
afibrous capsule have two distinct layers , an outer and inner , the capsule being
covered by athin layer of peritoneal membrane . The spleen comprises two
distinct regions , the white pulp and red pulp in addition spares or trabecule .
The white pulp represernt the major part of the organ , it is alymphatic tissue
that could be differentiate into two forms : diffuse and nodular lymphatic tissue
with medium and small size arteries represent the branches extend from the
large trabecular arteries . Then these arteries branch into arterioles surrounded
by sheath of reticular and lymphatic cells called Schweigger Sediel sheath .
The red pulp has randomly distributed between the white pulp regions , it
consist of cellular cord that surround the venous sinuses which had irregular
shape lined endothelial cells separated by small gaps freely .
The capsule consist of two layer , an outer layer that represent large
collagen fiber while the inner layer represent large muscular fiber , thus the
marginal zone between the white and red pulp is absent . the ellipsoid body was
present in the white pulp more than the red pulp . In this study there are two type
of nodules , type T nodule and type B were present . The percentage of the first
nodular type is more than the second , which is the important character of the
spleen of quail differ from other fowl