Which hormone is responsible for severe uterine contractions during parturition?
Important Questions on Human Reproduction
The hormone controlling parturition is
Read the statements and identify the right option.
Statement I: Mild foetal ejection reflex is induced by placenta.
Statement II: Foetal ejection reflex triggers the release of oxytocin from the ovary:
Column I contain terms and Column II contains definitions. Match them correctly and choose the right answer.
| Column I | Column II |
| A. Parturition | 1. Attachment of zygote to the endometrium. |
| B. Gestation | 2. Release of an egg from Graafian follicle. |
| C. Ovulation | 3. Delivery of baby from the uterus. |
| D. Implantation | 4. Duration between pregnancy and birth. |
| E. Conception | 5. Formation of a zygote by fusion of the egg and sperm. |
| 6. Stoppage of ovulation and menstruation. |
Which of the following statements are correct?
Statement A: Relaxin is a hormone secreted by the ovary and placenta.
Statement B: It relaxes the pelvic ligaments and softens and widens the cervix during childbirth.
i. During parturition, oxytocin induces intense contractions in the uterus.
ii. After parturition oxytocin stimulates milk ejection.
iii. The labour pain during childbirth is due to oxytocin.
iv. Oxytocin is secreted from placenta and ovary.
Read the following statements and choose the correct option.
a. Soon after the infant is delivered; the placenta is also expelled out of the uterus.
b. Parturition is induced by a complex neuroendocrine mechanism.
c. The milk produced during the initial few days of lactation is called colostrum.
d. During parturition, oxytocin acts on the ovarian muscles and causes stronger uterine contraction.
Which of the above are correct statements:-
i. During parturition, oxytocin induces intense contractions in the uterus.
ii. After parturition oxytocin stimulates milk ejection.
iii. The labour pain during child-birth is due to oxytocin.
iv. Oxytocin is secreted from placenta and ovary.
