HCG secreted from:
Correct Answer: Placenta
Description: Ans A. (Placenta) hCG is produced by the syncytiotrophoblast of the placenta. Its value reach maximum levels ranging 100 IU & 200 IU/ml b/w 60-70 days of pregnancy.It can be detected in the material serum or urine as early as 8-9 days following ovulation.The rescue & maintenance of corpus luteum till 6 wk ofpregnancy is the major biological function of hCG- Dutta obstetrics 6th/ 58"It can be measured by radioimmunoassay & detected in blood as early as 6 davs after conception Ganong 22th/ 449Hormone produced by cvtotrophoblastIt produces hypothalamus kike releasing factors; Corticotrophin releasing hormone (CRH) Gonadotrophin releasing hormone (GnRH) Growth hormone releasing hormone (Gjrh) Thyrotrophin releasing hormone (TRH)Other Neuropeptide YHormones produced by syncytiotrophoblastProtein hormone HCG Human placental lactogen-HPL - Human chorionic thyrotropin (HCT) Pregnancy specific (3-1 glycoprotein (PS(3G) Pregnancy associated plasma protein A (PAPPA)Growth factors Inhibin Activin Transforming growth factor (p) Epidermal growth factorSteroid hormones: Estrogen ProgesteroneOther: Relaxin (also secreted by corpus luteum & deciduas).hCG: Review of facts# It is a glycoprotein'-1 consisting of a hormone non-specific & a hormone specific b subunit.# hCG is chemically Si functionally similar to pituitary luteinising hormone. The a subunit is biochemically similar to LH, FSH & TSH where as the b subunit is relatively unique to hCG.# It is produced by the syncytiotrophoblasf3 of the placenta and secreted into the blood of both mother & fetus# Half life of hCG is about 24 hours# By radioimmunoassay it can be detected in the maternal serum or urine as early as 8-9 days" following ovulation. In early pregnancy, the doubling time of hCG concentrations is plasma is 1.4-2 days'3. The blood & urine values reach maximum levels ranging 100 IU & 200 lU/ml b/w 60-70 days of pregnancy'# It is commercially obtained from the urine of pregnant women- Shaws Gynaecology 14th/137# The rescue & maintaince of corpus luteum till 67 weeks of pregnancy is the major biological function of hCG.
Category:
Gynaecology & Obstetrics
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now