Question

Umbilical cord contain
a. Umbilicus
b. Placenta
c. Discus proligerus
d. Allantoic artery and vein

Answer 1

The narrow tube-like structure that forms a connection between the developing baby and the placenta is called the umbilical cord. It can also be called a supply line for babies. The main function of the umbilical cord is to carry the blood of the baby back and forth between the baby and the placenta. It carries the waste from the developing baby’s body and transfers it to the mother’s body via the placenta.

Complete answer:
There are two umbilical arteries present in the umbilical cord which is commonly known as an allantoic artery and one umbilical vein. The oxygenated and nutrient-rich blood is carried by the one vein to the fetus while the deoxygenated blood is carried by the two arteries from the fetus. The number of umbilical arteries may change the structure of the umbilical cord.

The channel that helps in the flow of blood between the placenta and fetus is called the umbilicus. The belly button or navel is mainly known as the umbilicus. It also helps in the intestine and urinary system development.

The organ that develops in the uterus at the time of pregnancy is called the placenta. It is a connection between the mother and the developing baby which starts from the wall of the uterus of the mother and connects the baby’s umbilical cord.

The cluster of cells that surround the oocyte in both ovarian follicles is called discus proligerus or cumulus oophorus. The innermost layer of discus proligerus is corona radiata and it is present adjacent to the zona pellucida.

Hence, the correct answer is option (D).

Note: So here we noted that the physical and emotional connection between the mother and fetus is the umbilical cord. It helps in oxygen, nutrients, and food transfer to the fetus from the mother. It also removes the waste from the fetus's body which needs to be eliminated maternally. Once the baby is delivered then the umbilical cord is removed at the same time.