This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
The probable source of relaxin is : 
Select and explain. 
A. Ovary, B. Adrenal coex, C. Liver, D. Baholins gland
D: Baholins gland
Answer: D: Baholins gland 
Explanation: Relaxin is a peptide hormone. deg It is produced by the ovarydeg to be specific by the corpus luteum of pregnancydeg If corpus luteum is in options, it should be the answer of choice. It has also been identified in : - placentadeg - deciduadeg - choriondeg It is not detected i 11-11 -Os lel s -es, t women.deg Levels of Relaxin rise during 1st trimester when corpus luteum is dominant and declines in the second trimester. This suggests a role in maintaining early pregnancy. deg In animals, relaxin softens the cervix, inhibits uterine contractions and relaxes p.iblic symphisis.deg It has no effect on prolactin secretion but enhances growth hormone secretion by the pituitary.deg