Legend: SB - small bronchus; M - smooth muscle cells; E - ciliated pseudostratified columnar epitelium; G - glands; H - hyaline cartilage
Legenda: SB - bronhalni ogranak; M - glatke mišićne stanice; E - višeredni cilindrični epitel s trepetljikama; G - bronhalne žlijezde; H - hijalina hrskavica