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Development of valves in the small saphenous vein in human fetuses

100%

Czarniawska-Grzesinska M., Bruska M.

Folia Morphologica

2002

tom 61

nr 1

37-42

The study was performed on 82 small saphenous veins in human fetuses of both sexes aged 9 to 37 weeks. The earliest valves were observed in 13 week-old fetuses. In fetuses between 13 and 18 weeks old the number of valves increased from 1 to 8. In the older fetuses between 19 and 37 weeks the number of valves varied from 5 to 9 and does not seem to be related to age. During development more valves were found in the upper part of the small saphenous vein. The height of valves increases with age and differs between particular valves of the same vein.

Perforating veins of the skin in human foetuses

72%

Flisinski P., Szpinda M., Flisinski M.

Folia Morphologica

2004

tom 63

nr 4

There are 3 groups of perforating veins of the shin: the medial, the lateral and the internal sural perforating veins. Dysfunction of these veins is one of the main factors in venous hypertension. There is a lack of data in the literature concerning perforating veins of the shin in human foetuses. The aim of this study was identification of the perforating veins of the shin in human prenatal development. The material examined included 88 human lower limbs of foetuses (21 males and 23 females) aged from 16 to 38 weeks of intra-uterine life. The perforating veins were dissected under a steromicroscope. The number of perforating veins was analysed in relation to the sex of the foetus and the side of a body. In our study perforating veins of the shin did not show sexual or syntopic dimorphism. Between 2 and 6 Cockett’s perforating veins were constantly present. Of these veins 80% divided into ascending and descending branches. Fibular perforating veins were found more often (90.9%) than Boyd’s perforating veins (21.6%). Between 1 and 3 fibular perforating veins were observed but in 9% of cases they were entirely absent.

Ograniczanie wyników

2 Folia Morphologica

1 Bruska M.

1 Czarniawska-Grzesinska M.

1 Flisinski M.

1 Flisinski P.

1 Szpinda M.

1 2004

1 2002

Wyniki wyszukiwania

Development of valves in the small saphenous vein in human fetuses

Perforating veins of the skin in human foetuses