Why Do Mammalian and Reptilian Eardrums Look the Same?

Image by Bogdanov of Wikipedia From an evolutionary standpoint, reptiles/birds and mammals are as different as one can get among vertebrate animals. Given just how different the two animal classifications are, it is strange why the eardrums look SO similar. So similar that there has been a debate whether the ear in reptiles/birds and mammals evolved from a common ancestor OR... did the ear evolve independently to a similar appearing structure. Based on Japanese research , the argument is…

6/29/2015 0

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How do Vocal Cord Cysts, Polyps, and Nodules Form?

There are MANY theories as to how vocal cord  cysts ,  polyps , and  nodules  form. However, one theory that seems to make the most sense to me deals with how the vocal cord heals after a traumatic event (ie, screaming, yelling, coughing, etc). With a cyst , the mucosal vocal cord lining breaks down and during the healing process a cyst develops due to entrapped cells meant for creating lining. A polyp , however, is in essence a blistering of the vocal cord lining. Vocal cord nodule for comp…

10/23/2011 0

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