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[Afferent and efferent innervation of the human fascia lata femoris during prenatal ontogeny].

The broad fascia have been studied in 256 extremities of human embryos and fetuses treated by methods of impregnation after Bielschowsky - Gros and Rasskazova, histologically after Falck - Hillarp - Govyrin, Karnovsky - Roots and by incubation of slices in 2% glyoxylic acid. The first neural elements as fasciculi of neural fibres are discovered in 8-9 week-old embryos. Cholinesterase and catecholamines are detected in nerves of the vegetative neural system on the 11-12th week of the intrauterine life, thus demonstrating the appearance of the mediator stage in functioning the autonomic nervous system. Receptor structures having the appearance of simple branching bushes are revealed in the broad fascia in 3-3.5-month-old fetuses. During prenatal ontogenesis the neural apparatus of the broad fascia is becoming more complex, the number of types and total amount of free and incapsulated receptors are increasing, the latter being revealed in 5-month-old fetuses. At the stage of development free neural terminals predominate, and by the time of birth, the number of incapsulated receptors is increasing. The greatest number of the neural terminals are situated in the anterior and external parts of the broad fascia. Cholinergic and adrenergic neural fibers from plexus in the broad fascia, situating mainly near blood vessels.