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Author Question: What is unique regarding the blood supply to the lung? a. It receives blood from right and left ... (Read 71 times)

Alainaaa8

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on: Jul 16, 2018
What is unique regarding the blood supply to the lung?
 
  a. It receives blood from right and left ven-tricles.
  b. It requires no dedicated blood supply as it exists in a gas environment.
  c. Pulmonary venous drainage contributes to the normal anatomic shunt.
  d. The pulmonary arteries are the primary source of O2 for lung structures.

Question 2

What is the physiologic result of the infants' more compliant thorax compared with that of an adult?
 
  a. It is easier for infants to breathe.
  b. Their functional residual capacity is re-duced based on predicted body weight (PBW).
  c. They breathe larger tidal volumes based on IBW.
  d. They have less of a tendency to develop atelectasis.


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komodo7

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

ANS: A
The respiratory system is a unique organ in that it receives a double blood supply: one from the left ventricle and one from the right ventricle.

Answer to Question 2

ANS: B
With a more compliant thorax, the resultant balance of these static forces in the infant favors a reduced FRC and total lung capacity (TLC). Proportionately lower lung volumes in the infant can lead to early airway closure, atelectasis, ventilation/perfusion mismatch, shunting, and re-sultant hypoxemia.


Alainaaa8

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Reply 2 on: Jul 16, 2018
:D TYSM

miss.ashley

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Reply 3 on: Yesterday
Wow, this really help

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