Understanding Hormone Synthesis In The Fetoplacental Unit

Understanding Hormone Synthesis In The Fetoplacental Unit

Question 1. Stages of spermatogenesis.
Answer:

Question 2. Fetoplacental unit.
Answer:

• The fetus and placenta interacts as functional unit for synthesis of steroid hormones
• The enzymes which are absent in fetus are present in placenta and those which are absent in fetus are present in fetus
• Thus fetus and placenta interacts together for synthesis of steroid hormones
• This functional unit of fetus and placenta is called fetoplacenta unit

Question 3. Define menarche and menopause.
Answer:

• The commencement of menstrual cycle is called menarche.
• The permanent cessation of menstrual cycle in old age is called menopause.

Question 4. Immunological tests for pregnancy.
Answer:

• It is based on double antigen antibody reactions

Procedure:

• A drop of HCG antiserum is taken on glass slide
• A drop of urine from suspected mother is added to it and mixed

Results:

• If the urine contains HCG, neutralization of HCG antiserum occurs
  This doesn’t produces agglutination
• If agglutination occurs, it means urine doesn’t contains HCG and the mother is not pregnant

Advantages:

• Accurate and quick method
• Easy to perform
• Performed on 5th day of conception
• Animal are not scarified