Loading....
Coupon Accepted Successfully!

Biochemistry

Open Flashcards

Lipid

Question
1 out of 26
 

Which of the following statements about respiratory distress syndrome RDS is true?



A It is unrelated to the baby's premature birth.

B It is a consequence of too few Type II pneumocytes.

C The lecithin/sphingomyelin ratio in the amniotic fluid is likely to be greater than two.

D The concentration of dipalmitoylphosphatidylcholine in the amniotic fluid would be expected to be lower than that of a full-term baby.

Ans. D The concentration of dipalmitoylphosphatidylcholine in the amniotic fluid would be expected to be lower than that of a full-term baby.

DipalmitoylphosphatidylcholineDPPC, or dipalmitoyl lecithin is the lung surfactant found in mature, healthy lungs. RDS can occur in lungs that make too little of this compound. If the lecithin/sphingomyelin ratio in amniotic is greater than two, a newborn's lungs are considered to be sufficiently mature—premature lungs would be expected to have a ratio lower than two. The RDS would not be due to too few Type II pneumocytes—these cells would simply be secreting sphingomyelin rather than DPPC.

Lipid Flashcard List

26 flashcards
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
11)
12)
13)
14)
15)
16)
17)
18)
19)
20)
21)
22)
23)
24)
25)
26)