Chorioallantoic placenta
from class:
General Biology I
Definition
The chorioallantoic placenta is a structure in placental mammals where the chorion and allantois membranes fuse to facilitate nutrient and gas exchange between mother and fetus. It plays a crucial role in fetal development by providing oxygen, nutrients and removing waste products.
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5 Must Know Facts For Your Next Test
- The chorioallantoic placenta is formed from the fusion of the chorion and allantois membranes.
- It allows for efficient nutrient transfer, gas exchange, and waste elimination between the mother and fetus.
- This type of placenta is characteristic of eutherian (placental) mammals.
- Hormones produced by the placenta help maintain pregnancy and support fetal development.
- The degree of invasiveness of the placenta into the uterine wall varies among different mammalian species.
Review Questions
- What membranes fuse to form the chorioallantoic placenta?
- How does the chorioallantoic placenta benefit fetal development?
- What type of mammals possess a chorioallantoic placenta?
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