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Uterine gland

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Title: Uterine gland  
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Subject: Interlabial sulci, Pubocervical ligament, Follicular antrum, Tunica albuginea (ovaries), Corpus hemorrhagicum
Collection: Mammal Female Reproductive System
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Uterine gland

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
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.

Contents

  • Function 1
  • See also 2
  • References 3
  • Additional images 4
  • External links 5

Function

The uterine glands synthesize or transport and secrete substances essential for survival and development of the embryo or fetus and associated extraembryonic membranes.[1]

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.[2]

See also

References

  1. ^ Gray CA, Bartol FF, Tarleton BJ, et al. (November 2001). "Developmental biology of uterine glands". Biol. Reprod. 65 (5): 1311–23.  
  2. ^ Burton GJ, Watson AL, Hempstock J, Skepper JN, Jauniaux E (June 2002). "Uterine glands provide histiotrophic nutrition for the human fetus during the first trimester of pregnancy". J. Clin. Endocrinol. Metab. 87 (6): 2954–9.  

Additional images

External links

This article incorporates text from a public domain edition of Gray's Anatomy.


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