Birth and Parturition
Biology ⇒ Reproduction and Development
Birth and Parturition starts at 9 and continues till grade 12.
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Describe the role of the cervix during childbirth.
Describe what happens during the dilation stage of labor.
Describe what happens to the uterus after the placenta is expelled.
During which stage of labor does the cervix open fully?
Explain the importance of the positive feedback mechanism in labor.
Explain why contractions become stronger and more frequent as labor progresses.
Explain why the placenta must be expelled after the baby is born.
Explain why uterine contractions are important during labor.
Name the three main stages of labor in the correct order.
What is parturition?
What is the function of the amniotic fluid during birth?
What is the main function of oxytocin during parturition?
What is the role of prostaglandins in parturition?
Which hormone is primarily responsible for initiating labor in humans?
Which hormone is released in a positive feedback loop during labor to increase contractions?
Which structure is expelled from the mother’s body during the placental stage?
A woman in labor is experiencing strong, regular contractions, but the cervix is not dilating as expected. Suggest two possible reasons for this and explain your reasoning.
Describe the potential risks to the mother if the placenta is not completely expelled after birth.
During labor, why is it important for the baby's head to rotate as it passes through the birth canal?
Explain how the interplay between oxytocin and prostaglandins leads to the progression of labor.
