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Author Question: By what mechanism does gas exchange across the lung occur? a. Active transport b. Facilitated ... (Read 84 times)

Cooldude101

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on: Jul 16, 2018
By what mechanism does gas exchange across the lung occur?
 
  a. Active transport
  b. Facilitated diffusion
  c. Facilitated transport
  d. Simple diffusion

Question 2

Developmental morphogenesis of the human respiratory system can be categorized into:
 
  a. three periods.
  b. five stages.
  c. 6 weeks.
  d. 40 weeks.


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raenoj

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: D
This close match of gas and blood across a large but extremely thin blood-gas barrier membrane enables efficient gas exchange to occur by simple diffusion.

Answer to Question 2

ANS: B
Figure 9-1 shows the various stages of lung development, and Table 8-1 summarizes the major developmental events in each phase.


Cooldude101

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Reply 2 on: Jul 16, 2018
Thanks for the timely response, appreciate it

carlsona147

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Reply 3 on: Yesterday
Excellent

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