Labor

Question 1

What hormone is the onset of labor controlled by?

Answer 1

oxytocin

Question 2

How does oxytocin work to help with labor?

Answer 2

it stimulates uterine contractions through a POSITIVE feedback loop

Question 3

what are the three stages of labor?

Answer 3

1. Dialation stage
   2.Expolsion stage
2. placental stage

Question 4

Dialation stage

Answer 4

-lasts from onset of contractions to the complete dialation of cervix (10 cm)
-lasts 6-12 hours
-rupture of amnionic sac occurs here

Question 5

Explosion stage

Answer 5

-lasts from complete cervical dialation to delievery
-time may decrease with # of deliverys mom has had

Question 6

Placental stage

Answer 6

-from delivery of baby to the delivery of placenta
-placenta gets delivered through powerful uterine contractions

Question 7

Corpus luteum change during pregnancy:

Answer 7

Corpus luteum will continue to secrete estrogen and progesterone throughout the first 3-4 months in order to maintain uterine lining and prepare mammary glands

Question 8

Placenta

Answer 8

once the placenta is formed, it will take over the corpus luteum’s role and start secreting estrogen and progesterone

Question 9

Cardio changes

Answer 9

increased BV, SV, HR, and Q

Question 10

Uterine enlargement

Answer 10

the uterus grows, pressing on structures such as the bladder

Question 11

pulmonary changes

Answer 11

increased VT, VE, and bronchodialation

Question 12

once baby comes out and the placenta gets expelled _______ levels drop.

Answer 12

oxytocin