The primary mechanism responsible for the closure of fetal ducts ...

[pragya sharda]

The primary mechanism responsible for the closure of fetal ducts following birth is:
 
  1. Suctioning of the nose and mouth.
   2. The first breath of the infant.
   3. High carbon dioxide levels.
   4. Stimulation of the infant.

Question 2

Identify the correct order for wound healing for a child.
 
  __ Saturation phase
   __ Inflammation phase
   __ Proliferation phase

[Tonny]

Answer to Question 1

2
Feedback
1. Suctioning of the nose and mouth do not assist in closing the fetal ducts, but instead result in hypoxia.
2. The first breath by the infant results in higher oxygen levels and relaxation of the pulmonary artery. In turn, the pressure gradients within the heart change and force the fetal ducts to close.
3. High carbon dioxide levels would result in pulmonary vasoconstriction, which would not close the fetal ducts.
4. Stimulation of the infant may assist the infant in taking his/her first breath, but it is the first breath that assists in closing the fetal ducts.

Answer to Question 2

3, 1, 2

[pragya sharda]

Thank you

[Tonny]

Happy to help you