摘要:

1,276 adult Indian skulls were examined for the incidence of the metopic suture. It was observed that metopism was present in 2.66% of the skulls and metopic sutures were present in 38.17% of the skulls. The metopic suture was present in the lower part of the frontal bone in various shapes in 35.27% of cases. The incidence in the upper, upper middle and lower middle parts of the frontal bone is 0.8% in each type. Besides the above-mentioned findings a peculiar type of shape was seen in 0.63 (inverted y) and a radiating type in 0.31 % of the skulls.

ISSN:1422-6405    

DOI:10.1159/000145154

出版商:S. Karger AG    

年代:1979

数据来源: Karger

摘要:

The borders and ridges of the fibula show a difficult aspect caused by the boneforming musculature. These structures are an occasion for misunderstanding and mistaken denominations, which even had a noticeable effect on the PNA. Two thirds of all human fibulae exhibit a clearly prominent ‘crista musculi tibialis posterioris’, giving tendinuous attachment to the tibialis posterior muscle. In diagnosis of borders this crista may lead to errors, because it branches off from the interosseous border underneath the upper fourth of the fibula and reaches the medial crest in the middle of the bone. Most of the borders of the fibula show a twisted course corresponding to the direction of the shaping musculature and effecting a fictitious torsion of the shaft. The proper torsion of the fibula, however, is substantiated by the difference between the absolute torsion (= twist of the two ends of the bone) and the accompanying torsion (= twist enforced by the torsion of the tib

ISSN:1422-6405    

DOI:10.1159/000145155

出版商:S. Karger AG    

年代:1979

数据来源: Karger

摘要:

Embedding kidney in polymerized glutaraldehyde-urea favors the retention of glycoprotein matrix of the cell coat and the basement membrane of the glomeruli. The basement membrane appears as a single layer with uniform amorphous matrix. Thick glycoprotein coat covers the whole surface of prodocytes and their foot processes. In areas other than the slits and the portion of the foot processes which touch on the basement membrane, the coat is a continuous layer with an average thickness of 490 Å. In the slits between the foot processes of podocytes there is an actual fusion of glycoprotein coats; the average width of the slit is 415 Å. The glycoprotein ‘plugs’ in the slit may be a significant portion of the glomerular filtration barrier against macromolecules, together with the basement membrane and the slit diaph

ISSN:1422-6405    

DOI:10.1159/000145156

出版商:S. Karger AG    

年代:1979

数据来源: Karger

摘要:

Mast cells, as adjudged by the metachromatic staining of their cytoplasmic granules, were found in 79% of the 97 human brains studied. They were most numerous and most consistently present in the infundibulum, pineal organ, area postrema and choroid plexuses. They were also numerous in the leptomeninges surrounding the pineal organ and infundibulum. Occasional mast cells were also seen within the supraoptic crest, the subfornical organ, the ventricles and the leptomeninges at sites other than over the infundibulum and pineal organ. They were not detectable elsewhere in the brain or spinal cord. In the infundibulum, pineal organ, area postrema and telencephalic choroid plexuses mast cells were most numerous in young individuals (i.e., 0–19 years of age); thereafter, their numbers progressively decreased with aging. Elsewhere mast cell numbers remained about the same with aging. Except in the area postrema where mast cells were more numerous and more consistently present in males, sex-related differences in mast cell number or distribution were not detected. No differences in either the abundance, the distribution or the percentage of individuals possessing mast cells at any of these sites were apparent between ‘normative’ brains, lesioned brains (‘stroke1, lobotomy, etc.) or those from individuals with either congenital or acquired encephalo

ISSN:1422-6405    

DOI:10.1159/000145157

出版商:S. Karger AG    

年代:1979

数据来源: Karger

摘要:

Localization and activity of five hydrolases (alkaline phosphatase, adenosine triphosphatase, acid phosphatase, nonspecific esterase and leucylamino-peptidase) were evaluated histochemically in the epididymides of mature dogs. In the ductuli efferentes, cilia and apical parts of the epithelial cells displayed high activity of alkaline phosphatase and adenosine triphosphatase. Strong activity of acid phosphatase, nonspecific esterase and leucylaminopeptidase was present in the basal and supranuclear zones of the epithelium of the ductuli efferentes. Stereocilia of all three segments of the ductus epididymidis showed a high activity of alkaline phosphatase. Positive adenosine triphosphatase reaction was confined to the stereocilia of the initial segment. A complex pattern of acid phosphatase activity was observed in the middle segment. The subdivision of the middle segment in four subsegments was therefore suggested. In the epithelium of the initial segment only a few nonspecific esterase-positive cells were seen. The infranuclear and basal areas of the epithelium in the middle segment and the supranuclear zone of the terminal segment displayed distinct nonspecific esterase activity. The possible contribution of the hydrolases to the function of the epididymis is discussed.

ISSN:1422-6405    

DOI:10.1159/000145158

出版商:S. Karger AG    

年代:1979

数据来源: Karger

摘要:

Quantitative changes in the internal elastic membrane (IEM) were studied in human arteries from different locations in 31 males and 31 females, using an eight-criterion classification system. The IEM involvement shows a sex-dependent increase with age, and is more pronounced in arteries known to exhibit a more intensive atherosclerotic involvement. It seems that the IEM changes represent a true ageing phenomenon, which is sometimes influenced to a various degree by the atherosclerotic process.

ISSN:1422-6405    

DOI:10.1159/000145159

出版商:S. Karger AG    

年代:1979

数据来源: Karger

摘要:

The histochemistry of carbohydrates has been studied in the epithelium lining the bulbourethral gland of the rat by means of light- and electron-microscopic methods. The results obtained show that the cytoplasms of the epithelial cells contain neutral and acidic carbohydrates. The neutral carbohydrates exhibited positive reactions with periodic acid-Schiff and periodic acid-thiosemicarbazide-silver proteinate, whereas the acidic carbohydrates reacted positively with alcian blue (AB; pH 1.0 and 2.5) and dialyzed iron. Most neutral carbohydrates were found to be glycoproteins localized within the secretory granules. The acidic carbohydrates consist of at least two types, AB (pH 1.0)-reactive sulfated and AB (pH 2.5)-reactive nonsulfated carbohydrates; most nonsulfated carbohydrates were determined to be sialic acid. The acidic carbohydrates were also localized within the secretory granules.

ISSN:1422-6405    

DOI:10.1159/000145160

出版商:S. Karger AG    

年代:1979

数据来源: Karger

ISSN:1422-6405    

DOI:10.1159/000145161

出版商:S. Karger AG    

年代:1979

数据来源: Karger

ISSN:1422-6405    

DOI:10.1159/000145162

出版商:S. Karger AG    

年代:1979

数据来源: Karger

ISSN:1422-6405    

DOI:10.1159/000145143

出版商:S. Karger AG    

年代:1979

数据来源: Karger