ISSN:
1432-0878
Keywords:
Juxtaglomerular apparatus
;
Mesangial cells
;
Goormaghtigh cells
;
Morphometry
;
Domestic fowl
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary The domestic fowl has two types of glomerulus (mammalian and reptilian type). 30 of each were studied morphometrically in semi thin and PAS-stained sections. The juxtaglomerular apparatus was larger in the mammalian type, but complete in both, containing macula densa, Goormaghtigh (lacis) cells and hilar arterioles. Granular epithelioid cells were occasionally found in the afferent arterioles and within the glomerulus in the mammalian type only. All glomeruli studied had a prominent mesangial cell mass (MCM), which was larger in mammalian type glomeruli. Hilar arterioles often penetrated the mesangial cell mass and regularly ramified within it. There was always extensive direct contact between the Goormaghtigh cell mass and the macula densa on the one side and the MCM on the other. In mammalian type glomeruli, the afferent arterioles were invariably found centrally within the MCM, but in the reptilian type no distinct pattern was found. The close relationship between the MCM and the hilar arterioles, especially in mammalian type glomeruli, suggests that the MCM regulates the glomerular filtration rate.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00217576
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