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The formation of an organ.



the formation and development of organs in animals. Ontogenetic organogenesis is studied through embryology and biology of development, while phylogenetic organogenesis is studied through comparative anatomy. These disciplines describe and analyze the processes of organogenesis and explain the phylogenetic and ontogenetic origins of the processes. Comparative anatomy examines the rise of new organs and the transformation, division, progressive development and reduction, and rudimentation of organs. Study of the development of the forms of organs in connection with organ function led to the discovery of the basic principles of phylogenetic organogenesis—differentiation (seeDIFFERENTIATION), integration (seeINTEGRATION), and change of function.

To a large extent, ontogenetic organogenesis repeats phylogenetic organogenesis (seeBIOGENETIC LAW). Successive differentiation and integration of organs and uneven growth and active migration of cellular material occur in the course of ontogenetic organogenesis. The forces that underlie ontogenetic organogenesis can be precisely studied, especially by experiment. (For initial and subsequent stages of organogenesis seeDETERMINATION, CLEAVAGE, EMBRYONIC DEVELOPMENT, GERM LAYERS, INDUCTORS, INDUCTION, ORGANIZER.)

With respect to plants, “organogenesis” usually refers to the ontogenetic formation and development of basic organs—roots, stem, leaves, and flowers—from undifferentiated tissue, or meristem (seeMERISTEM).

References in periodicals archive ?
Organogenesis continues to invest in new clinical data and peer-reviewed publications to demonstrate the real-world effectiveness of these products.
Para ello se llevo a cabo un estudio anatomico del material vegetal, para determinar si la organogenesis ocurria en forma directa o indirecta.
2009) improved the protocol of in vitro organogenesis for sour orange and volkamer lemon using an alternative explant consisted of hypocotyl segment attached to a cotyledon fragment.
PALABRAS CLAVE / Dioscorea alata / Micropropagacion / Organogenesis /
Floral organogenesis in Acnistus arborescens, Dunalia solanacea, Deprea bitteriana, Larnax glabra and Larnax hawkesii -- tribe Physaleae (Solanaceae)
These studies indicate that before the vasculature is even fully formed, it plays an important role in organogenesis.
Although in vitro organogenesis has been described for many citrus genotypes, some species and cultivars have shown to be recalcitrant to the process.
With diabetes being a widespread and growing medical problem in Saudi Arabia and other Gulf states, the incidence of Diabetic Foot Ulcers is expected to increase, said Dr Damien Bates, chief medical officer at Organogenesis.
Organogenesis says its rotator cuff patch provides a resorbable scaffold for the reinforcement of soft tissues which are repaired by sutures and suture anchors during rotator cuff surgery and has been optimized for the strength and tissue interaction requirements for this use.