Question
Describe the process of parturition in humans.
✓
Answer
Parturition:
The average duration of human pregnancy is about 9 months which is called the gestation period.
The act of expelling the full term foetus from the mother’s uterus at the end of gestation period is called parturition.
It is induced by a complex neuroendocrine mechanism.
Parturition signals 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 induces stronger uterine muscle contractions which lead to expulsion of the baby from the uterus through the birth canal.
The average duration of human pregnancy is about 9 months which is called the gestation period.
The act of expelling the full term foetus from the mother’s uterus at the end of gestation period is called parturition.
It is induced by a complex neuroendocrine mechanism.
Parturition signals 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 induces stronger uterine muscle contractions which lead to expulsion of the baby from the uterus through the birth canal.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Define fermentation. Write the names of substrate of alcoholic and lactic acid fermentation.
Genetic drift.
Give any four factors that favour high speciation at lower altitudes.
Name the protective substance present in the pollen envelope to tide over adverse conditions.
How does an electrostatic precipitator work to remove particulate pollutants released from the thermal power plants?
Given below is a figure of an ecosystem. Answer the following questions.
- What type of ecosystem is shown in the figure.
- Name any plant that is characteristic of such ecosystem.
Distinguish between Australopithecus and Neanderthal man
Name the two different categories of microbes naturally occurring in sewage water. Explain their role in cleaning sewage water into usable water.
- What are the after effects of the degradation of ozone?
- How does it affect human health?
What are the uses of vaccine?