1. Is the fault in the components that perform any physical action?
Answer: Yes
2. Is the fault in components that move?
Answer: No
3. Is the fault in the mechanisms controls?
Answer: No
4. Does the faulty component responsible for visual data acquisition?
Answer: No
5. Is the faulty component used for sensing the location of objects?
Answer: No
6. Is the faulty component responsible for sound reception?
Answer: Yes
7. Is the fault in critical components of the mechanism?
Answer: Yes
64) Chicken, Gallus gallus domesticus
Chickens can be found all over the world and are used for their meat and eggs. Chickens have the ability of regenerating the hair in their ear if it was damaged.
Cochlear hair in the ear is important for hearing and balance. If the hair were to get damaged the individual or animal could loose some of their hearing or all of it and impair their sense of balance. Supporting cells have been found in the inner ear and are activated by Notch signaling to proliferate and differentiate into hair cells (Mizutari et al.). Chickens also ears have a thin F-actin belt that expresses little E cadherin and allow the hairs to be regenerated by the supporting cells (Burns et al.). Once the hairs have been regenerated in the cochlea the specialized cells will stop proliferating.
Mizutari, K., M. Fujioka, M. Hosoya, N. Bramhall, H. J. Okano, H. Okano, and A. S. Edge. “Notch Inhibition Induces Cochlear Hair Cell Regeneration and Recovery of Hearing after Acoustic Trauma.” Neuron 77.1 (2013): 58-69. NCBI. Web. 9 Dec. 2014.
Burns, J. C., M. S. Collado, E. R. Oliver, and J. T. Corwin. “Specializations of Intercellular Junctions Are Associated with the
Presence and Absence of Hair Cell Regeneration in Ears from Six Vertebrate Classes.” The Journal of Comparative Neurology 521.6 (2013): 1430-448. NCBI. Web. 9 Dec. 2014.
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