birth canal


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Related to birth canal: placenta

birth canal

[′bərth kə′nal]
(anatomy)
The channel in mammals through which the fetus is expelled during parturition; consists of the cervix, vagina, and vulva.
References in periodicals archive ?
After the shoulders pass through the birth canal, the rest of the calf is streamlined and will pass through quickly.
He is subjected to a lot of pressure from uterine and abdominal contractions and from the constricted area in the birth canal. Each time the cow strains, her abdominal contractions put pressure on the blood vessels to the uterus, resulting in diminished oxygen supply to the calf.
Whatever the cause of dystocia is, various criteria has to be taken into account by the Veterinary obstetrician when he has to select between the fetotomy and caesarean section and a non- exhaustive list of such factors being health status of dam, size and condition of the calf, available space in birth canal and uterus for manipulations and traction, familiarity of obstetrician to the procedure, affordability of farmer, availability of infrastructure and skilled assistance.
Madigan said he believes that if a foal passes too rapidly through the birth canal or is delivered via caesarean section, it loses the pressure on its body that signals the body to drop neurosteroid levels.
As a newborn passes through the birth canal, the microbiome of a mother's vagina ends up in the offspring's gut.
Braedon suffered nerve injuries to his right arm when a doctor pulled him from the birth canal after his shoulder had become stuck behind his mother's pubic bone during a vaginal delivery, according to court records.
And as baby Platt enters the world, typically looking like she's been through a car wash rather than a birth canal, Grandma Gail's face will be the first thing she sees.
And as baby Platt enters the world, below, typically looking like she's been through a car wash rather than a birth canal, Grandma Gail's face will be the first thing she sees.
The results showed that those delivered by Caesarean section, and who therefore did not pass down the mother's birth canal, lacked one of the major groups of gut bacteria, the Bacteroidetes, or acquired it late when compared with babies born vaginally.
Awarding the star to somebody who hasn't been born yet might seem strange, but hopefully it might relieve some of the pressure already mounting on Ella/Eva's tiny shoulders which still have to make it down the birth canal, by the way.
The TBS is the first large randomised controlled trial that has been done to compare the efficacy and safety of the two modes of delivery -- normal vaginal delivery and Caesarean section -- in twin pregnancies where both the foetuses are in cephalic or head-first presentation (the normal foetal position to come down the birth canal).
Obstetric fistulas, a serious women's condition where a hole develops in the birth canal, most commonly occurs from complications associated with childbirth, especially during prolonged labor when blood flow is cut off to the tissue surrounding the birth canal walls.