Human Chorionic Gonadotropin (hCG) is a glycoprotein hormone produced by the syncytiotrophoblast cells of the developing placenta shortly after implantation. Its crucial and defining role in early pregnancy is to 'rescue' and maintain the corpus luteum. After ovulation, the corpus luteum normally degenerates after about 10-14 days, causing a drop in progesterone. hCG, which is structurally similar to Luteinizing Hormone (LH), binds to the LH receptors on the corpus luteum. This signal prevents its regression and stimulates it to continue secreting progesterone and estrogen. This hormonal support is vital for maintaining the thickened, vascularized endometrium, preventing menstruation, and supporting the early embryo until the placenta becomes fully functional and takes over progesterone production (around 8-12 weeks of gestation). hCG is the hormone detected by pregnancy tests.

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Zambia

• Joseph Soko – 101 pts

• Visual Pathway Lesions
• Positive and Negative Symptoms
• Hallucinations and Delusions
• Antipsychotic Medications
• Emergency: Environmental Emergencies