منابع مشابه
The plasminogen activator system in the ovine placentome during late gestation and stage-two of parturition.
The process of placental separation is not completely understood. In domestic animals, especially cattle, it is important that expulsion of the fetal membranes takes place in a timely manner in order to achieve maximal reproductive efficiency. The activity of the matrix-metalloprotease (MMP) family of proteases is known to be reduced in placentomes from cases of retained placenta. Members of th...
متن کاملPlacental Implications of Peroxisome Proliferator-Activated Receptors in Gestation and Parturition
The placenta is a transitory structure indispensable for the proper development of the embryo and fetus during mammalian gestation. Like other members of the nuclear receptor family, the peroxisome proliferator-activated receptors (PPARs) are known to be involved in the physiological and pathological events occurring during the placentation. This placental involvement has been recently reviewed...
متن کاملPhysiology of parturition
Labor is a physiological event involving a sequential, integrated set of changes within the myometrium, deciduas, and uterine cervix that occur gradually over a period of days to weeks. Biochemical connective tissue changes in the uterine cervix appear to precede uterine contractions and cervical dilation, and all of these events usually occur before rupture of the fetal membranes. In other wor...
متن کاملSession A – ECOLOGY S1. DO BISON FEMALES SYNCHRONIZE PARTURITION BY GESTATION
Gregarious mammals generally synchronize birthing by adjusting the time of estrus. Berger (Ecology 73: 323-329, 1992) proposed that American bison (Bison bison) females in good condition are capable of adjusting gestation length, as well. He hypothesized that females in good condition that breed late in the season can shorten their gestation length so as to give birth during the birthing peak. ...
متن کاملPhysiology of parturition
Labor is a physiological event involving a sequential, integrated set of changes within the myometrium, deciduas, and uterine cervix that occur gradually over a period of days to weeks. Biochemical connective tissue changes in the uterine cervix appear to precede uterine contractions and cervical dilation, and all of these events usually occur before rupture of the fetal membranes. In other wor...
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ژورنال
عنوان ژورنال: American Anthropologist
سال: 1902
ISSN: 0002-7294
DOI: 10.1525/aa.1902.4.4.02a00060