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Placenta
Placenta is the organ that attaches itself to the uterus during the earliest stages of pregnancy. It provides blood, oxygen, and nourishment to the fetus while also allowing a way for waste to exit the baby's blood as well.
573 Questions
What is the tube which attaches the embryo to the placenta called?
The umbilical cord. The umbilical cord has the function of sending blood to the baby and returning blood from the baby after it has been utilized. There are two arteries in the umbilical cord that do this.
The placenta develops in the uterus after the zygote has implanted in the Uterine wall. This wall develops into the placenta during pregnancy. If implantation does not occur the wall will be sloughed off in the next menstrual cycle
How is the fetus connected to the placenta?
the fetus is the baby and the placenta is how the baby gets nutrients or food while in the womb, there is a tube that connects from the placenta to the fetus bellybutton
How much does the placenta and amniotic fluid weigh?
7 1/2pounds is about how much the baby will weigh by the end of pregnancy 1 1/2pounds is how much the placenta weighs 4 pounds is attributed to increased fluid volume 2 pounds is the weight of the uterus 2 pounds is the weight of breast tissue 4 pounds is because of increased blood volume 7 pounds is attributed to maternal stores of fat, protein and other nutrients 2 pounds for the amniotic fluid Total: 30 pounds
Issues if twins have only one placenta?
No. Two placentas indicates dizygotic twins which always has 2 amnions and 2 chorions.
This is a common misconception. My own twins are identical, yet they had separate sacs and separate placentas that implanted on polar opposite sides of the uterus. DNA tested have proven their zygosity. Whether identical twins will have their own placentas is dependent upon when the egg split. In my case, the egg probably splip immediately after conception and conception likely took place in the fallopian tube.
Which immunoglobulin class is able to cross the placenta from the mother to the fetus?
This is called natural passive immunity.
What attaches the placenta to the baby?
As long the surfaces are clean and dry you could probably get away with a bit of double-sided sticky tape.
Seriously, my grasp of biology leaves a lot to be desired but I'll try and look this up for you. Back soon.
It would appear that the placenta is attached to the embryo by the umbilical cord.
When does the placenta take over hormone production?
Around 12 weeks. This is why 12 weeks is said to be such a crucial time in pregnancy. Once a woman passes the 12 week mark the possibility of miscarriage decreases drastically. It's important that the placenta be able to take over hormone production at that time.
Does the placenta supply food for the developing embryo?
everything. It is the way the fetus gets all it needs from the mother and disposes of of practically all waste except heat. The fetus gets nutrients and oxygen from the placenta and the placenta filters the fetus' blood and takes out wastes
What if the placenta sac shows empty at 7 weeks?
it may just mean you are not as far along as you thought. the dates are just an estimate based on the start date of your last period. you could be up to two weeks less in which case the would only see a fetal pole or implantation site. you should have your levels checked to see if they increase and another ultrasound to see if it changes. a lot of times when it is early in a pregnancy things do not always show up right away. these tests are not infallible do not worry!
What is it called when the embryo attaches to the wall of the uterus?
Implantation is the medical term meaning attachment of the zygote to the uterine wall. If the zygote does not attach, a period occurs.
What happens if the umbilical cord is bleeding?
The umbilical cord comes out of the mother with the placenta.
Abdominal wall dimensions and umbilical position vary widely with BMI and should be taken into account when choosing port locations .It's located on the stomach.
it is located at the center of the abdominal wall
How dangerous is a hemorrhage on the placenta while pregnant?
You really need to ask your doctor as s/he will have all the information about the type of hemorrhage.
What is the name for separation of the placenta?
Also called "Chorioamniotic Seperation", or Placental abruption it is most common in late birth, after 20 weeks. Anything sooner will most likely result in excessive hemmoraging and cause the baby to abort. Late in pregnancy it will require lots of bedrest. Other cases can include only a slight tear and mean severe pain for the mother but no apparent bleeding, still, this should be reported so your doctor can monitor and it does not turn into something more threatening to you and the baby.
Threatening to the baby because the placenta is a vital 'organ' to the baby while in gestation and separation can create distress (rapid, abnormal heartbeat, low blood pressure) in your baby which in late pregnancy could require a premature delivery.
The best remedy for placenta separation is to closely monitor it with your doctor, and only take the advice of your doctor.
How early can you see the placenta on ultra sound?
at about 4 weeks they can sometimes see the gestation sac. by 5 weeks they can usually see the yolk sac. and by 6 weeks you can usually see a fetal pole, sometimes even a heartbeat
Which hormone is associated with the maintenance of the placenta?
There are a number of different hormones involved in pregnancy, and I will outline the main hormones and their purposes below:
- Human Chorionic Gonadotrophin - this is involved in the maintanence of the corpus luteum, which secretes progesterone and oestrogen during the first 12 weeks of pregnancy, after which the placenta takes over production of these hormones. This hormone is secreted by the chorion/placenta.
- Oestrogen - initially secreted by the corpus luteum up to 12 weeks, after which placenta takes over secretion of this hormone.Oestrogen inhibits the hormones FSH (Follicle Stimulating Hormone) and LH ( Lutenising hormone), both of which are involved in the process of ovulation in a menstruating woman. During pregnancy, menstruation must stop, and so Oestrogen inhibits these 2 hormones. It also acts on the uterus, causing growth of the uterus and increasing the sensitivity of the uterus to the hormone oxytocin which is involved in the processes of birth and lactation. It also inhibits the hormone prolactin, and thus inhibits lactation during pregnancy. However, it stimulates the development of the ductal system in the breasts in preparation for lactation after the baby has been born. Causes a softening and relaxing of the ligament of the pelvic girdle.
- Progesterone - again this is initially secreted by the corpus luteum, and later by the placenta. It stimulates the development of milk glands, and also inhibits the secretion of prolactin ( in order to stop lactation) and also inhibits FSH and LH. It stimulates growth and glandular activity of the uterus. It is essential for successful implantation and maintainence of the endometrium, stimulates endometrial glands to secrete nutrients taken up by the developing embryo and slightl supresses the mother's immune system so the foetus is not rejected. As a steroid hormone, it is transferred to the fetus and used by the fetus for production of fetal hormones by the fetal adrenals. It also quitens muscular contractions of the uterus to prevent premature expulsion of the fetus, causes mammary glands to develop and enhances their ability to produce milk.
- Human placental lactogen - hormone made in the placenta which gives foetus priority over maternal glucose and fatty acids. Also known as Human Chorionic Somatomammotrophin.
- Prolactin - secreted by the maternal anterior lobe of pituitary gland, it is essential for expression of oestrogen and progesterone on the mammary glands. Having said that, oestrogen (and progesterone) inhibits lactation until birth. When levels of Oestrogen and Progesterone then decrease after birth, prolactin can exert its effects fully and lactation can take place.
- Relaxin - Causes the relaxation of ligaments, softens the cervix and inhibits muscle contractions.
The placenta provides your developing baby with a supply of blood, oxygen, and nutrients vital to a healthy baby! The placenta is fully developed by your 18th week of pregnancy. The placenta also carries waste including carbon dioxide away from your baby. The quality of function of your placenta is dependent upon how healthy you are, this is why it is important to keep your blood and oxygen as clean as possible especially during pregnancy (which is why you should not drink or smoke during pregnancy). The placenta keeps harmful materials away from your baby including infections but the body does not always recognize these harmful substances which is another reason you should not drink,smoke or take drugs during pregnancy.
What is the risk of placenta acreeta after c sections?
Extremely dangerous. I miracously survived one in o6 along w my son. You should have a team of specialists present at birth. Ready to repair any organ that it may have grown into and possibly you might need blood transfusions for hemoraging complications so look into family donating blood. Contact me if need Vickycuomo@gmail.com
What is the consequences for the umbilical cord not to have 3 vessel cords?
The feotus will get blood/nutrients less easily from mother as less vessels means a smaller flow of the babies vital nutrition. The extent of this however, depends on the stage of pregnancy, missing vessel and personal case - see doctor to seek advice
What is 'lamb placenta skin lotion' in Chinese?
'Lamb placenta skin lotion' in Chinese is 'yang tai pan ru ye' (羊胎盘乳液) or 'yang tai pan mian shuang' (羊胎盘面霜).
What happens if placenta is down at the time of 5 months pregnancy?
This condition is called placenta previa and has various grades, from 1 to 4.
It depends how far down, if right Dow, cwentrally over the cervix it will probably stay there and the mother wil;l have to be jhospitalised for the latter part of her pregnancy as this is potentially fatal to mother or baby and if she starts bleeding will need an immediate C-section. If it is height#er it Amy move out of the way.
