Question

Which one of the following is not the function of the placenta?

• A. Secretes oxytocin during parturition
• B. Facilitates removal of carbon dioxide and waste material from the embryo
• C. Secretes estrogen
• D. Facilitates supply of oxygen and nutrients to the embryo

Answer 1

The correct option is A

Secretes oxytocin during parturition

The correct option is A.

The explanation of the correct answer:

1. The placenta is the structural and functional unit through which the baby gets nutrition from the maternal body.
2. It also gives rise to the umbilical cord and keeps attached to the uterine wall throughout the pregnancy.
3. Oxytocin helps to induce labor by accelerating uterine contraction. Oxytocin hormone is secreted by Hypothalamus.
4. Hence it is not the function of the placenta.

The explanation of the incorrect answers:

Option B:

As with nutrition, Excretion and Respiration in a developing embryo are achieved through the placenta.

Hence the removal of carbon dioxide and waste material is also achieved through the placenta.

Option C:

1. Hormones like estrogen are also secreted during pregnancy by the placenta.
2. Estrogen helps in maintaining the hormonal levels and creating more blood vessels.

Option D:

1. The main function of the placenta is to transfer oxygen and nutrients to the developing embryo.

Final answer:

Secreting oxytocin during parturition is not the function of the placenta.