hCG (human chorionic gonadotropin) is primarily caused by syncytiotrophoblastic cells of the placenta during pregnancy.
The Main Cause of hCG Production
- Placenta: The major source of hCG is the placenta, specifically the syncytiotrophoblastic cells. These cells are responsible for producing this hormone once a fertilized egg implants in the uterus. According to the reference material, the syncytiotrophoblastic cells of the placenta produce hCG.
- Role in Pregnancy: hCG's main job is to stimulate the corpus luteum to produce progesterone. Progesterone is crucial for maintaining the pregnancy in its early stages.
Other Sources of hCG
While the placenta is the primary source, other parts of the body can produce smaller amounts of hCG:
- Pituitary Gland: Small amounts of hCG are produced here.
- Liver: This organ also contributes to hCG production, though in a lesser amount.
- Colon: Some hCG is produced in the colon.
Summary Table
| Source | Amount of hCG Produced | Primary Role |
|---|---|---|
| Placenta | Major Source | Stimulates progesterone production to maintain pregnancy |
| Pituitary Gland | Minor Source | Unknown |
| Liver | Minor Source | Unknown |
| Colon | Minor Source | Unknown |
