alleryStart learning →Pulmonary surfactant is described as composed of proteins and:
ASimple sugars
BMetal ions
CPhospholipids
DNucleic acids
Answer & Solution
Correct answer: C. Phospholipids
1. Surfactant has a stated composition.
2. A type II alveolar cell secretes pulmonary surfactant.
3. It is a substance composed of phospholipids and proteins.
4. That composition lets it act at the air-liquid interface.
_Source: OpenStax Anatomy and Physiology 2e (CC BY 4.0), Ch 22 'The Respiratory System', sections 22.1-22.6_
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