External

•Aurcle•External

Auditory meatus

•Ear drum

Middle

•Auditory tube

•Osiclles•Tympani

c Cavity

Inner •Otic

Placodes

1st pharyngeal arch (1,2,3)

2nd pharyngeal Arch (4,5,6)

1st Pharyngeal cleft

Ectoderm- 1st pharyngeal cleft

Endoderm- 1st pharyngeal pouch

1st pharyngeal pouch- endoderm

1st pharyngeal arch- incus and malleus

2nd pharyngeal arch- stapes

1st pharyngeal pouch - endoderm

Ectoderm

EAR

DEVELOPMENT