Ear development
1
Extern al • Aurcle • External Auditory meatus • Ear drum Middle • Auditory tube • Osiclles • Tympanic Cavity Inner • Otic Placodes 1 st pharyngeal arch (1,2,3) 2 nd pharyngeal Arch (4,5,6) 1 st Pharyngeal cleft Ectoderm- 1 st pharyngeal cleft Endoderm- 1 st pharyngeal pouch 1 st pharyngeal pouch- endoderm 1 st pharyngeal arch- incus and malleus 2 nd pharyngeal arch- stapes 1 st pharyngeal pouch - endoderm Ectoderm E A R D E V E L O P M E N T
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Transcript of Ear development
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
