Question

Forceful muscular contraction of Uterine wall is involved in-
A. Implantation
B. Lactation
C. Micturition
D. Parturition

Answer 1

Hint: Uterine Contraction occurs in females as the females possess uterus as a part of the reproductive system. It occurs due to a variety of reasons in females. It involves the contraction of the muscles of the uterus. The muscles involved in contraction are termed as Smooth muscles.

Complete answer:
Key points regarding parturition:
- Parturition implies labor.
- It involves the mechanism of flagging the beginning of labor or it is a system of conveying a kid after the fruition of the pregnancy period.
- The offspring is brought into the world with the arrival of cortisol.
- During parturition measure, the cervix expands and unwinds. Alongside cortisol, oxytocin and estrogen hormones are delivered to start the milk creation.
- During parturition, the uterus starts to push the hatchling towards the cervix and proceeds until the baby descends the birth trench. In this cycle, the head ought to be first to come out.
- After parturition, the uterus delivers the placenta and it passes out following the child being conceived.

Hence, the correct answer is option (D).

Additional information:
> Implantation- It is a stage of pregnancy in humans at which the embryo attaches to the wall of the uterus after undergoing the process of cleavage.
> Lactation- It describes the secretion of milk from the mammary glands and in humans it is termed as breastfeeding.
> Micturition- Urination is the process of urine excretion from the urinary bladder which is processed by kidneys. In humans, the Urinary bladder is used to store urine.

Note: There are certain hormones involved in the above-mentioned process such as Oxytocin, Adrenaline, Endorphins, Prolactin, etc. In animals like cattle, it is called Calving and involves three process:
- The dilation of Cervix
- Calf delivery
- The delivery of the placenta.