Question

Which of the following hormone is not secreted by the human placenta:

• A. Estrogen
• B. hCG
• C. LH
• D. Progesterone

Hint:

Remember, LH is a pituitary hormone and not secreted by the placenta. The placenta secretes hormones like estrogen, progesterone, and hCG to maintain pregnancy.

Answer 1

The Correct Option is C

Step 1: Hormones secreted by the human placenta. The placenta plays a vital role in maintaining pregnancy by secreting key hormones such as: 
- Estrogen: Essential for the development of the uterus and preparation for childbirth.
 - Progesterone: Maintains the uterine lining and prevents contractions during pregnancy. 
- hCG (Human Chorionic Gonadotropin): Supports the corpus luteum to continue progesterone production in early pregnancy. 

Step 2: Why LH is not secreted by the placenta. Luteinizing hormone (LH) is secreted by the anterior pituitary gland, not by the placenta. LH primarily triggers ovulation and the formation of the corpus luteum in the ovaries. 

Step 3: Incorrect options explained. - Estrogen, hCG, and Progesterone are all secreted by the placenta to support pregnancy.