Template:Respiratory Postnatal Timeline table
From Embryology
| Age (months) | Alveoli (million) | Respiratory Airways (million) | Generations of Airways |
| Birth | 24 | 1.5 | |
| 3 | 86 | 1.8 | |
| 3 | 77 | 2.5 | 21 |
| 3 | 73 | 2.0 | |
| 7 | 112 | 3.7 | |
| 13 | 129 | 4.5 | 22 |
| 16 | 127 | 4.7 | |
| 22 | 160 | 7.1 | |
| 48 | 257 | 7.9 | |
| 98 | 280 | 14.0 | 23 |
| Adult | 296 | 14.0 | 23 |
| Data modified from [1]
Links: respiratory | Respiratory Comparison | Mouse Human Respiratory | Mouse respiratory stages | mouse | rat | rabbit | Timeline Comparisons | |||
- ↑ Dunnill MS. Postnatal growth of the lung. Thorax 1962;17:329–333.
