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Statements

Subject Item
dbr:Development_of_the_gonads
rdf:type
yago:Unit109465459 dbo:Embryology yago:Material114580897 yago:Compound114818238 yago:Protein114728724 yago:Secretion105404728 yago:Chemical114806838 yago:LiquidBodySubstance105397468 owl:Thing yago:Molecule114682133 yago:PhysicalEntity100001930 yago:WikicatHormonesOfTheHypothalamus-pituitary-gonadAxis yago:BodySubstance105263850 yago:WikicatHumanProteins yago:OrganicCompound114727670 yago:WikicatPeptideHormones yago:Abstraction100002137 yago:Matter100020827 dbo:AnatomicalStructure yago:Relation100031921 yago:Macromolecule114944888 yago:Hormone105407119 yago:Substance100019613 wikidata:Q4936952 yago:Thing100002452 yago:Part113809207
rdfs:label
性腺的發育 Development of the gonads
rdfs:comment
The development of the gonads is part of the prenatal development of the reproductive system and ultimately forms the testes in males and the ovaries in females. The gonads initially develop from the mesothelial layer of the peritoneum. Germ cells migrate from near the allantois and colonize the primordial gonads. In the female, the germ cells colonise the cortex and become oogonia. In the male, the germ cells colonise the seminiferous cords of the medulla, becoming spermatogonia. 性腺的發育是生殖系統在胚胎發育過程中的一環，在男性會發育為睪丸，女性則為卵巢。 卵巢的部分會分化為中央的髓質以及外部的生殖上皮。未成熟的卵源自於卵黃囊背側內胚層的細胞，一旦他們到達生殖嵴即被稱為卵原細胞。卵原細胞的週邊會圍繞著一層由間質構成的結締組織細胞(的前身)。這是卵巢內濾泡形成的基本原理。
foaf:name
Development of the gonads
dbp:name
Development of the gonads
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n16:Inguinalhernia.gif
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dbc:Embryology_of_urogenital_system
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1095136627
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dbr:Seminiferous_tubules dbr:Rete_testis dbr:External_spermatic_fascia dbr:Inguinal_canal dbr:Scrotum dbr:Canal_of_Nuck dbr:Gubernaculum dbr:Stroma_of_ovary dbr:Immature_ova dbr:Obliquus_externus dbr:Efferent_duct dbc:Embryology_of_urogenital_system dbr:Hilum_(anatomy) dbr:Obliquus_internus dbr:Tunica_albuginea_of_testis dbr:Mesovarium dbr:Yolk_sac dbr:Mesorchium dbr:Testis dbr:Inguinal_crest dbr:Prenatal_development dbr:Sexual_differentiation_in_humans n13:Inguinalhernia.gif dbr:Granulosa_cell dbr:Ovarian_follicles dbr:Ovary dbr:Connective_tissue dbr:Fundus_of_the_uterus dbr:Ovaries dbr:Testes dbr:Mesonephros dbr:Oogonia dbr:Germ_cell dbr:Labium_majus dbr:Oogonium dbr:Endoderm dbr:Germinal_epithelium_(female) dbr:Cremaster_muscle dbr:Gonadal_ridge dbr:Ovarian_follicle dbr:Indirect_inguinal_hernia dbr:Aponeurosis dbr:Gonad dbr:Gonads dbr:Tunica_albuginea_of_the_ovaries dbr:Gubernaculum_testis dbr:Vaginal_process dbr:External_inguinal_ring dbr:Mesothelium dbr:Spermatogonia dbr:Striated_muscle_tissue dbr:Plexus dbr:Seminiferous_tubule dbr:Plica_gubernatrix dbr:Peritoneum dbr:Ovarian_ligament dbr:Mesothelial dbr:Medulla_of_ovary dbr:Groin dbr:Round_ligament_of_the_uterus dbr:Smooth_muscle_tissue dbr:Development_of_the_reproductive_system dbr:Allantois
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freebase:m.0cs358 freebase:m.02x07kk wikidata:Q5266777 n19:4jDvA dbpedia-zh:性腺的發育
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dbt:Unreferenced_section dbt:Development_of_urinary_and_reproductive_systems dbt:Sex_determination_and_differentiation dbt:Infobox_embryology dbt:More_citations_needed dbt:Reflist
dbo:thumbnail
n16:Inguinalhernia.gif?width=300
dbo:abstract
The development of the gonads is part of the prenatal development of the reproductive system and ultimately forms the testes in males and the ovaries in females. The gonads initially develop from the mesothelial layer of the peritoneum. The ovary is differentiated into a central part, the medulla, covered by a surface layer, the germinal epithelium. The immature ova originate from cells from the dorsal endoderm of the yolk sac. Once they have reached the gonadal ridge they are called oogonia. Development proceeds and the oogonia become fully surrounded by a layer of connective tissue cells (pre-granulosa cells). In this way, the rudiments of the ovarian follicles are formed. In the testis, a network of tubules fuse to create the seminiferous tubules. Via the rete testis, the seminiferous tubules become connected with outgrowths from the mesonephros, which form the efferent ducts of the testis. The descent of the testes consists of the opening of a connection from the testis to its final location at the anterior abdominal wall, followed by the development of the gubernaculum, which subsequently pulls and translocates the testis down into the developing scrotum. Ultimately, the passageway closes behind the testis. A failure in this process causes an indirect inguinal hernia. Germ cells migrate from near the allantois and colonize the primordial gonads. In the female, the germ cells colonise the cortex and become oogonia. In the male, the germ cells colonise the seminiferous cords of the medulla, becoming spermatogonia. 性腺的發育是生殖系統在胚胎發育過程中的一環，在男性會發育為睪丸，女性則為卵巢。 卵巢的部分會分化為中央的髓質以及外部的生殖上皮。未成熟的卵源自於卵黃囊背側內胚層的細胞，一旦他們到達生殖嵴即被稱為卵原細胞。卵原細胞的週邊會圍繞著一層由間質構成的結締組織細胞(的前身)。這是卵巢內濾泡形成的基本原理。
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wikipedia-en:Development_of_the_gonads?oldid=1095136627&ns=0
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12490
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