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Embryo Stages Animations Review Questions  Summary Internal Animation |
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- Length: 3- 5 mm
- The embryo has 3 branchial bars in this stage.
- The ear vesicles are almost closed but not detached.
- The arm buds is just beginning to appear.
- The intestinal portal can be seen well.
- Ovulation age: 26 - 30 days
Question: How many branchial bars does the embryo have in this stage?
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Developmental Stages in Human Embryos by Ronan O'Rahilly and Fabiola Müller. Published by Carnegie Institution of Washington, Publication 637. 1987. |
Stage 11
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Stage 13
 Stage 12 Internal
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