alleryStart learning →Pulmonary surfactant is secreted by which cell type?
APleural lining cell
BType II alveolar cell
CType I alveolar cell
DBronchial smooth muscle
Answer & Solution
Correct answer: B. Type II alveolar cell
1. Two alveolar cell types have different jobs.
2. A type II alveolar cell is interspersed among the type I cells.
3. It secretes pulmonary surfactant.
4. The type I cells form the thin exchange surface instead.
_Source: OpenStax Anatomy and Physiology 2e (CC BY 4.0), Ch 22 'The Respiratory System', sections 22.1-22.6_
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