Question

Fetal ejection reflex In human females Is induced by?

• A. Pressure exerted by amniotic fluid
• B. Differentiation of mammary glands
• C. Fully developed fetus and placenta
• D. Release of oxytocin from the pituitary

Answer 1

The correct option is C

Fully developed fetus and placenta

The correct option is C.

Explanation for correct option:

1. The fetal ejection reflex is also known as the Ferguson reflex.
2. In this signals are originated from a fully developed fetus and placenta.
3. Mild uterine contractions as a result of this caused the foetal ejection reflex.
4. The uterine muscles are then affected by oxytocin, which causes powerful contractions.
5. Further contractions keep getting harder and stronger.
6. As a result, the placenta and infant are both ejected from the uterus through the birth canal.

Explanation for incorrect options:

Option A:

1. Amniotic fluid is a clearly slight yellowish liquid that surrounds a developing fetus in the mother's womb.
2. It is necessary for growth and development.
3. It provides a barrier against infection.
4. It maintains a constant temperature for the fetus thus protecting it from heat loss.
5. It permits proper lung development and musculoskeletal development.
6. It acts as a shock absorber to protect the fetus from external injury.

Option B:

1. The mammary gland is a gland located in the breast of females that is responsible for producing milk.
2. Differentiation of the mammary gland produces milk at a later stage.
3. This production of milk is known as lactation.

Option D:

1. Oxytocin is a hormone that is released by the posterior pituitary.
2. It helps in the contraction of the uterine muscle which induces labor pain and helps in childbirth.
3. The oxytocin reflex is called the milk ejection reflex.
4. It causes the contraction of myoepithelial cells.

Final answer: Fetal ejection reflex In human females Is induced by a fully developed fetus and placenta.