NEET PG DENTAL EXAM

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EMBRYOLOGY

PLACENTA FETAL MEMBRANES BIRTH DEFECTS AND TWINING

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The placenta is responsible for attaching the amniotic sac to the uterus and responsible for promoting nutritive exchanges between maternal blood and fetal blood, in addition to producing various hormones. Mark the alternative that contains the group of animals that have placenta
A
reptiles
B
Aves
C
Fish
D
Amphibians
E
mammals
Explanation: 

Detailed explanation-1: -The sac is filled with liquid made by the fetus (amniotic fluid) and the membrane that covers the fetal side of the placenta (amnion). This protects the fetus from injury. it also helps to regulate the temperature of the fetus.

Detailed explanation-2: -The outer membrane, the chorion, contains the amnion and is part of the placenta. On the outer side, the amniotic sac is connected to the yolk sac, the allantois, and via the umbilical cord, the placenta.

Detailed explanation-3: -The placenta is a temporary organ that forms in your uterus during pregnancy. It attaches to your uterine wall and provides nutrients and oxygen to your baby through the umbilical cord. Certain conditions of the placenta can cause pregnancy complications.

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