At what point in prenatal development do the lungs begin to ...

[MGLQZ]

At what point in prenatal development do the lungs begin to produce surfactant?
 
  a. 17 weeks
  b. 20 weeks
  c. 25 weeks
  d. 30 weeks

Question 2

A woman missed her menstrual period 1 week ago and has come to the doctor's office for a pregnancy test. Which placental hormone is measured in pregnancy tests?
 
  a. Progesterone
  b. Estrogen
  c. Human chorionic gonadotropin
  d. Human placental lactogen

[bbburns21]

Answer to Question 1

ANS: C
During week 25, the alveoli begin to produce surfactant, which enables the alveoli to stay open for adequate lung oxygenation to occur.

Answer to Question 2

ANS: C
Human chorionic gonadotropin is the basis for most pregnancy tests. It is detectable in maternal blood as soon as implantation occurs, usually 7 to 9 days after fertilization.