« previous next »

Author Question: At what point in prenatal development do the lungs begin to produce surfactant? a. 17 weeks b. ... (Read 35 times)

MGLQZ

  • Hero Member
  • *****
  • Posts: 579
on: Jun 28, 2018
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

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jun 28, 2018
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.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Congruence among values, beliefs, and role requirements supports the development of empowered ... Congruence among values, beliefs, and role requirements supports the development of empowered ...
Development of allergic rhinitis. Development of allergic rhinitis.
Development of Atherosclerosis Development of Atherosclerosis
Development of the Nervous System: Transverse section Development of the Nervous System: Transverse section
Seven-week embryo showing development of arm, forearm, and hand Seven-week embryo showing development of arm, forearm, and hand
Let A ⊆ R and p ∈ A. Suppose A\{p}6= ∅. Prove that p is an isolated point of A if and ... Let A ⊆ R and p ∈ A. Suppose A\{p}6= ∅. Prove that p is an isolated point of A if and ...
Video: Acid-base imbalances - metabolic acidosis and alkalosis

For a complete list of videos, visit our video library