glandulae uterinae

子宮内膜腺

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/11/16 11:47:40」(JST)

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Uterine glands
Vertical section of mucous membrane of human uterus. (Glands labeled at center right.)
Section through ovum imbedded in the uterine decidua. Semidiagrammatic. am. Amniotic cavity. b.c. Blood-clot. b.s. Body-stalk. ect. Embryonic ectoderm. ent. Entoderm. mes. Mesoderm. m.v. Maternal vessels. tr. Trophoblast. u.e. Uterine epithelium. u.g. Uterine glands. y.s. Yolk-sac.
Details
Latin	glandulae uterinae
Identifiers
Gray's	p.1262
Dorlands /Elsevier	g_06/12392830
TA	A09.1.03.028
FMA	71647
Anatomical terminology

Tube-like uterine glands, lined by ciliated columnar epithelium, are found in the functional layer of the uterine endometrium. Their appearance varies during the menstrual cycle. During the proliferative phase, uterine glands appear long due to estrogen secretion by the ovaries. During the secretory phase, the uterine glands become very coiled with wide lumens and produce a glycogen-rich secretion. This change corresponds with an increase in blood flow to spiral arteries due to increased progesterone secretion from the corpus luteum. During the pre-menstrual phase, progesterone secretion decreases as the corpus luteum degenerates, which results in decreased blood flow to the spiral arteries. The functional layer of the uterus containing the glands becomes necrotic, and eventually sloughs off during the menstrual phase of the cycle.

They are of small size in the unimpregnated uterus, but shortly after impregnation become enlarged and elongated, presenting a contorted or waved appearance.

Function

The uterine glands synthesize or transport and secrete substances essential for survival and development of the embryo or fetus and associated extraembryonic membranes.

Some secretory components from the uterine glands are taken up by the secondary yolk sac lining the exocoelomic cavity during pregnancy, and may thereby assist in providing fetal nutrition.

Additional images

• Primary chorionic villi. Diagrammatic.

• Secondary chorionic villi. Diagrammatic.

See also

• Tubular gland

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

• Swiss embryology (from UL, UB, and UF) gnidation/role02
• Histology at KUMC epithel-epith06
• Anatomy photo: Reproductive/mammal/uterus1/uterus2 - Comparative Organology at University of California, Davis - "Mammal, uterus (LM, Medium)"
• UIUC Histology Subject 1024

English Journal

• [Light and electron microscopic studies of the paraplacenta in the cat].

• Kehrer A.AbstractEven in the early stages of pregnancy microscopically demarcated zones were distinguished on the paraplacenta of the cat towards the poles and way from the zonary placenta. Along the zonary placenta there exists a transitional zone; this is characterized by having a uterine epithelium which possesses coral-shaped buddings or sprouts. In the main, the epithelium of the latter structures is decomposed apically and detritus is present. From the open-lying and partially injured capillaries there appears a ring shaped haematoma which is subsequently characterized as a marginal haematoma. In this, likewise, there grows a branched uterine epithelium with protruding buds. The chorion of the paraplacenta becomes immersed in the extravasated blood of the haematoma by means of long cell protrusions which bear clusters of microvilli. Polewards from the marginal haematoma there is a contact zone with adhesions between the chorionic and uterine epithelium. In the position of close contact with the chorion, the uterine epithelium is transformed into a maternal epithelial symplasma. Furthermore, the chorion develops a rosettelike epithelial proliferation. In addition, small and larger vesicles appear which could have developed from both epithelia. Finally there is an area on the dome-shaped poles of the placenta where there is no contact between the chorionic and uterine epithelium. The epithelium of the paraplacental chorion becomes almost entirely dissociated 1...2 days prior to birth. However, the uterine epithelium with the exception of the protruding buds on the margin of the zonary placenta remains intact. The post partum epithelialization of the wound area commences from this intact area. With the exception of a few short, deep lying tubuli the crypts and glandulae uterinae of the paraplacental disappear in the course of pregnancy. Through the stretching of the uterine wall they are widened and imcorporated into the uterine surface epithelium.
• Zeitschrift für mikroskopisch-anatomische Forschung.Z Mikrosk Anat Forsch.1978;92(1):119-46.
• Even in the early stages of pregnancy microscopically demarcated zones were distinguished on the paraplacenta of the cat towards the poles and way from the zonary placenta. Along the zonary placenta there exists a transitional zone; this is characterized by having a uterine epithelium which possesse
• PMID 749374

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★リンクテーブル★

リンク元

「子宮内膜腺」

「子宮内膜腺」

　　[★]

英

uterine gland, endometrial gland

ラ

glandulae uterinae