This section of notes is a introduction to development of senses (sight, smell, hearing and balance) through the development of the specialized sense organs (eye, nose and ear). Portions of the eye, nose and ear appear very early in development as specialized surface regions (placodes) on the embryo, these regions must be connected to the central nervous system by neural pathways that originate as extensions of the central nervous system.

There are also specific notes on Hearing and Balance, Vision, Smell and Taste development.
Embryo Images Unit:
Eye Development and Ear Development
Embryo Images OnlineLinks below require Internet connection.
Note these images are not to scale. Clicking each image will show full embryo.
Carnegie Stage 15
Carnegie Stage 16
Carnegie Stage 17
Carnegie Stage 18
Carnegie Stage 19
Carnegie Stage 20
Carnegie Stage 21
Carnegie Stage 22
Carnegie Stage 23
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