Definition

Question 1

Braxton Hick’s Contraction

Answer 1

Braxton Hicks contractions are sporadic contractions and relaxation of the uterine muscle. Sometimes, they are referred to as prodromal or “false labor” pains. It is believed they start around 6 weeks gestation but usually are not felt until the second or third trimester of the pregnancy.

Question 2

Prostaglandin theory

Answer 2

Initiation of labor occurs when arachidonic acids stimulate the formation of prostagladin which initiates uterine contraction.

Question 3

Oxytocin theory

Answer 3

As posterior pituitary gland of mother produces oxytocin that irritates the smooth muscles which causes contarction.

Question 4

Uterine stretch theory

Answer 4

When uterus reaches its limit it begins to release its content in order to gain original shape. Uterus is considered as balloon here.

Question 5

Placental degeneration Theory

Answer 5

Because of decreased blood supply and functional capacity, the uterus
starts to contract

Question 6

Progesterone deprivation theory

Answer 6

Decreased amount of progesterone initiates uterine motility.