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What part of the egg acts as the placenta in mammals?
The allantois, yolk sac and part of chorion.
Do tuna have placenta?
No, tuna fish do not have placentas. The placenta is part of mammal physiology, and fish are not mammals.
When and by whom placenta was invented?
The placenta is a part of the female reproductive system and was not invented by anyone. The first mammals known to have had placentas lived about 160 million years ago in the late Jurassic period.
What part of the uterus does the placenta attached to?
The placenta will be attached to the uterus, but it is not part of it. The uterus is a muscle and is part of basic female human anatomy. The placenta is an organ which is formed after conception.
Why are baby kittens born with cord around there neck?
Mammals, such as kittens, have a cord that connects them to the placenta. The placenta transfers food and oxygen to the baby while it is growing. That cord, the umbilical cord, goes from the placenta to the navel (or, on a cat, where the navel would be). Sometimes that cord can get wrapped around part of the body during birth.
What does placenta mean and do?
The placenta is a large organ that attaches to the wall of a pregnant womans womb, extracts nutrients and oxygen from her blood and feeds them to her developing baby. It is formed of cells from the embryo, so is not part of the mother. After the baby is born it is ejected from the womb, forming the "afterbirth". Most mammals use a placenta, the exceptions being the marsupials (kangaroo, opossom etc) and monotremes.
Is a feline mammal the same as a placental mammal?
Yes and No. Felines are animals closely related to cats (technically excluding the "great cats" ... lions, tigers, etc. ... who are felids but not felines). Placental mammals are those whose gestation includes a placenta (basically, all mammals except the monotremes and marsupials).All felines are placental mammals, but not all placental mammals are felines. Humans, for instance, are also placental mammals.Placental mammals bear live young, (that includes cats) that are nourished in the mother's uterus through the embryonic organ (placenta) attached to the uterus wall. The term "placental mammals" is somewhat misleading because marsupials also have placentae but it is short lived in its part for fetal nourishment. In eutherians, as "placental mammals" are known scientifically depend on the placenta during the full developmental stage of the fetus.
What is the part of the fruit that encloses the seed?
Fruit placenta
Is a polar bear part of the mammals?
yes a polar bear is part of the mammals!
Which foetal membrane takes part in the formation of placenta?
placenta is a complex structure formed by the process of trophoblastic cells (chorionicfondosum)and part of uterine endometrium called decidua basalis
What does a placenta posterior low major mean?
The placenta is located at the lowest posterior part of the internal os. This usually occurs in placenta previa that can either be partially closed or completely closed.
What part of the chicken is the wingdings?
The part of the chicken where the "wingdings" is located is the wing of the chicken. This part can be broken into do and called the "drumstick" and "wingding".
