Q. Regarding alveolar cells, which statement is INCORRECT? (Solved)
1. type I pneumocytes repair alveolar epithelium
2. pulmonary alveolar macrophages are derived from blood monocytes
3. mast cell membranes bind IgE via Fc portion to heavy chain
4. APUD (neuroendocrine) cells are of endodermal origin
5. type II pneumocytes are membranous
- e. type II pneumocytes are membranous