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phargeal apparatus
embryo Head and neck
| starts | becomes |
|---|---|
| 1st brachial arch | mandibular, merkle's |
| 2nd brachial arch | Reichart's, hyoid (anterior, lessor) |
| 3rd brachial arch | pharygeal area, hyoid (posterior, greater) |
| 4th and 6th brachial arch | cricoid cartilage, phargeal |
| 1st pouch | mastoid antrum |
| 2nd pouch | palatine tonsils |
| 3rd and 4th pouch | parathyroid and thymus |
| 1st groove | external acoustic meatus |
| 1st membrane | tympanic membrane |
| 2nd groove | nothing |