Question

The structure which provides the vascular connection between foetus & uterus is called
1. Corpus luteum
2. Placenta
3. Leydig cells
4. Fimbriae

Answer 1

Correct Answer - Option 2 : Placenta

The correct answer is Placenta.

Explanation:

• The placenta is a structure that connects or joins the developing fetus to the uterine wall to allow different physiological processes like nutrient uptake, waste elimination, and gaseous exchange via the mother’s blood supply i.e it provides a vascular connection between fetus & uterus.
• The placenta helps to fight against internal infection and produce hormones to support pregnancy,
• It is well developed in Eutheria. In marsupials, the embryo develops incompletely in the uterus.
• Based on the distribution of villi, the placenta can be divided into 7 major types

1. Diffused type placenta
2. Cotyledonary placenta
3. Intermediate type placenta
4. Zonary placenta
5. Cotyledonary placenta
6. Discoidal placenta
7. Metadiscoidal placenta

• Corpus luteum: It is a structure formed from the Graffian follicle. After Ovulation, the ruptured Graffian follicle gets transformed into the Corpus luteum. 
• Leydig cells: The cell that secretes androgen hormones in the human being is the Cells of Leydig. Cells of Leydig are found in testicles (male reproductive organ).
• Fimbriae: The infundibulum has several finger-like projections called fimbriae, they move closer to the ovaries during ovulation to collect the released ovum.