Answer:
3
Explanation:
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The right answer is True
Reason:
AV nodal block (also known as "heart block"), occurs when conduction between the atria and the ventricles is impaired due to damage of the specialized conducting tissue.
Answer:
Surfactant is the mixture of lipids, carbohydrates and proteins. It is produced in Lungs by epithelial cells.
Explanation:
i) It act to decrease the surface tension at the air liquid interface.
ii) It support air breathing.
iii) It enhances mucus clearance.