Biomaterial Database

Development of the pelvic plexus in human embryos and fetuses and its relationship with the pelvic viscera. 1993

O Arango-Toro, and J M Domenech-Mateu

Faculty of Medicine, Department of Anatomy, Autonomous University of Barcelona, Bellaterra, Spain.

Development of the pelvic plexus is studied in 15 human embryos and 2 fetuses ranging in size from 4 to 132 mm. C.R. length. A tridimensional reconstruction of the entire pelvic block was made in two specimens (30 and 132 mm. C.R. length) 80 X. The first ganglionic elements appear in Carnegie's stage 16, but the real definition of what in the final anatomy of the plexus is described as the hypogastric ganglion (Lee-Frankenhäuser) is formed in stage 18. Complete development of the plexus occurs in stage 23. Other relevant facts are: the appearance in stage 18 of the pelvic splanchnic nerves, which are formed from S2, S3 and S4, the involvement of S1 and S5 were not observed in any case. In all specimens studied, a close proximity was seen between the pelvic plexus and genitourinary organs. Starting in stage 18, the terminal ureter consistently crosses the posterosuperior part of the pelvic plexus.

UI	MeSH Term	Description	Entries
D007001	Hypogastric Plexus	A complex network of nerve fibers in the pelvic region. The hypogastric plexus distributes sympathetic fibers from the lumbar paravertebral ganglia and the aortic plexus, parasympathetic fibers from the pelvic nerve, and visceral afferents. The bilateral pelvic plexus is in its lateral extent.	Pelvic Plexus,Plexus, Hypogastric,Plexus, Pelvic
D010388	Pelvis	The space or compartment surrounded by the pelvic girdle (bony pelvis). It is subdivided into the greater pelvis and LESSER PELVIS. The pelvic girdle is formed by the PELVIC BONES and SACRUM.	Pelvic Region,Region, Pelvic
D005314	Embryonic and Fetal Development	Morphological and physiological development of EMBRYOS or FETUSES.	Embryo and Fetal Development,Prenatal Programming,Programming, Prenatal
D005865	Gestational Age	The age of the conceptus, beginning from the time of FERTILIZATION. In clinical obstetrics, the gestational age is often estimated from the onset of the last MENSTRUATION which is about 2 weeks before OVULATION and fertilization. It is also estimated to begin from fertilization, estrus, coitus, or artificial insemination.	Embryologic Age,Fetal Maturity, Chronologic,Chronologic Fetal Maturity,Fetal Age,Maturity, Chronologic Fetal,Age, Embryologic,Age, Fetal,Age, Gestational,Ages, Embryologic,Ages, Fetal,Ages, Gestational,Embryologic Ages,Fetal Ages,Gestational Ages
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014781	Viscera	Any of the large interior organs in any one of the three great cavities of the body, especially in the abdomen.