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Biomedical subjects

Z Wójtowicz

Publications and source records attributed to Z Wójtowicz.

At least 37 records · Page 2Linked to original sources
PubMed1996

Relationships between divisions of the lingular bronchus and vascularization patterns in the lingula.

In 100 left human lungs the main bronchus, the pulmonary artery and the pulmonary veins were injected with 65% methyl methacrylate (Duracryl) and then digested in sulphuric acid. The resulting specimens were studied concerning the divisions of the lingular bronchus and the types of arterial and venous vascularization of the lingula. As a rule the lingular bronchus divided into two segmental bronchi. A single lingular artery was found in 80% of the cases and a single lingular vein in 58%. Atypical bronchial divisions were almost always associated with unusual types of vascularization. Patterns of bronchial division showed complete concordance with those of arterial vascularization of the lingula in 64% of the lungs and consistency with venous drainage patterns in 54%.

Adolescent↗
PubMed1995

The activity of lysosomal enzymes in visual cortex of rabbits during experimental diabetes.

The activity of all principal groups of lysosomal enzymes (acid phosphatase, lipase, beta-galactosidase, sulphatase and cathepsin B) was measured in the visual cortex of rabbits with experimental diabetes. In the first stage of diabetes (21 days), it was observed that enzyme activities in the free fraction and in the membrane-bound fraction are decreased as compared to the initial values determined in healthy animals. In the later stages of diabetes (90-180 days), all lysosomal enzyme activities increased except for sulphatase. This indicated a superiority of catabolic processes in visual cortex cells in the course of experimental diabetes.

Animals↗
PubMed1991

Ultrastructure of the basilar artery in rabbit.

Ultrastructure of the basilar artery has been examined in 14 animals aged 70 and 140 days. The structure is characteristic for the muscular type artery. During the most intensive physical growth of the animals between 70 and 140 days, at the time of sexual maturation, the number of laminae in the middle layer increases from 4 to 6 and collagenous, and elastic fibers increase as well.

Animals↗
PubMed1989

The posterior portion of the cerebral arterial circle in postnatal life.

The posterior cerebral arteries and posterior communicating arteries were dissected in 180 human brains. The origin and diameter of vessels were determined with consideration to age, sex and body side. In 30 brains of humans aged 0 to 60 years microscopic structure of arteries was described. There is no histological difference in the structure of arterial wall in different age periods.

Adolescent↗
PubMed1989

[The basilar artery of humans].

The basilar artery in 44.4% of the cases came into being by joint of two vertebral arteries on the height of the inferior margin of the pont. However, in 40.4%--below, and in 15.1%--above of this margin. In 78.7% of the human the course of basilar artery was rectilinear. In 20.5% of the cases the bulge of this artery was observed on the right or left side, whereas in 0.8%--the S-shaped forms. In 56% of the persons the segmentation of the basilar artery on the posterior cerebral arteries takes place on the height of the superior margin of the pont, in 32.9%--above, and in 11.1%--below this one. The results of the investigations concerning the place of genesis, the height of segmentation and the direction of course of the particular artery, were permitted on separation of nine types of these blood vessels. The diameter of the initial and terminal section of the basilar artery at the new-born children was--respectively--1.9 and 1.8 mm, whereas at the adult persons it exceeded 4 mm. The length of this vessel ranged from 17.2 mm in the above-mentioned children to approximately 33 mm in persons over 20 years old. In all the examined cases the basilar artery was passing the arteries of the pont: medial and lateral and almost always the superior and the inferior anterior cerebellar arteries. In 12.4% of the persons the inferior posterior cerebellar arteries and, moreover, in 22.2%--the labyrinth arteries were beginning from this blood vessel.

Adolescent↗