Bissoy.com
Doctors Medicines MCQs Q&A

The foetal ejection reflex triggers the release of which hormone?

The foetal ejection reflex triggers the release of which hormone? Correct Answer Oxytocin

Concept:

  • Vigorous contraction of the uterus at the end of pregnancy causes expulsion/delivery of the foetus. This process of delivery of the foetus (childbirth) is called parturition.

Explanation:

  • Foetal Ejection reflex - 
  • The signals for parturition originate from the fully developed foetus and the placenta which induce mild uterine contractions called foetal ejection reflex.
  • This triggers the release of oxytocin from the maternal pituitary.
  • Oxytocin then acts on the uterine muscle and causes stronger uterine contractions, which in turn stimulates the further secretion of oxytocin.
  • The stimulatory reflex between the uterine contraction and oxytocin secretion continues resulting in stronger and stronger contractions.
  • This leads to the expulsion of the baby out of the uterus through the birth canal – parturition.

Additional Information

  • Prolactin: It is also called lactotrophic hormone. It regulates the growth and milk formation of mammary glands.
  • Estrogen, or oestrogen: It is a sex hormone responsible for the development and regulation of the female reproductive system and secondary sex characteristics.
  • Relaxin as the name suggests is used to keep the smooth muscles of the uterus relaxed. It is secreted in large amounts during parturition.

Related Questions

In the question below, a passage is given followed by three courses of actions numbered I, II and III. On the basis of the information given, you have to assume everything in the statement to be true, and then decide which of the following suggested courses of actions logically follow(s) for pursuing. Passage: COVID-19 has adversely affected Cinema Halls. Not just the fact that they are still in lockdown, but also because OTT platforms like Disney-Hotstar and Amazon prime are wooing desperate producers to directly release their films in OTT platforms. Despite repeated requests, producers are not heeding to the calls of Cinema Halls not to release on OTT platforms. Many cinema halls and multiplexes are staring at mammoth losses. Courses of action: I. The Cinema halls should be demolished and converted to multi-storey residential buildings. II. Multiplexes and Cinema halls must come together and ban the films that are releasing on OTT platforms from theatrical release. III. The Government must ban all films from direct release on OTT platforms.
The following program consists of 3 concurrent processes and 3 binary semaphores. The semaphores are initialized as S0=1, S1=0, S2=0. Process P0 Process P1 Process P2 While (true) { Wait (S0); Print ‘0’ Release (S1); Release (S2); } Wait (S1); Release (S0); Wait (S2); Release (S0);   How many times will process P0 print ‘0’? 
নিচের কোনটি Milk ejection reflex করে?
Which hormone is otherwise known as Growth Hormone Release Inhibiting Hormone (GHRIH)?
On vaginal examination, which level -1 station of the foetal head determines the foetal presenting part ?
Signal processing for FHR determination can be based either on detecting the foetal heart valve motion or on detecting the heart wall motion in Abdominal foetal electrocardiogram technique.
Which of the following hormone plays a major role during milk ejection in human beings?
In reflex action, reflex arch is formed by
At 2'O clock, the hands of a clock make an acute angle and a reflex angle. How much is the reflex angle (in degrees)?
Hormone that causes the milk ejection from the breasts when the baby begins to suckle is called