Question

Which of the following hormones is not secreted by human placenta?

• A. $LH$
• B. Estrogens
• C. Progesterone
• D. $hCG$

Answer 1

The correct option is (A) LH

Placenta

The placenta is a connection between the uterine wall and the foetus. It is formed by the interdigitations between the chorionic villi (finger-like projections of the trophoblast) and uterine tissue. Theplacenta performs a number of functions:

• Nutrients and oxygen pass from the maternal blood to the foetus through the placenta.
• Excretory products pass from the foetal blood into the maternal blood through the placenta.
• The placenta acts like an endocrine gland and secretes hormones like
• Estrogens
• Human chorionic gonadotropin (hCG)
• Human placental lactogen (hPL)
• Progesterone, etc.

Luteinizing hormone (LH)

Luteinizing hormone (LH) is a gonadotropin released by the anterior pituitary. It is not secreted by the human placenta.

Functions of Luteinizing hormone

1. Crucial in the ovulation process in females.
2. It has an important role in the menstrual cycle.
3. An important role in sperm production in males.
4. It stimulates the production of oestrogen and progesterone from the ovary.
5. Promote the corpus luteum to produce progesterone.
6. Testosterone production is stimulated by LH from the interstitial cells of the testes.

Final answer (A)LH

Related Questions

1. LH and FSH are collectively called _______
2. How does the placenta form during pregnancy?