Otic vesicle chick, invagination of the otic placode occurs passively due to the movements of the surrounding placode. The otic placode in zebrafish, on the other hand, occurs by cavitation; the ectodermal placode condenses and forms an ovoid ball directly below the embryo surface. Otic vesicle formation occurs later, during the 25-30 somite stage in mice. Otic vesicle Otic vesicle, or auditory vesicle, consists of either of the two sac-like invaginations formed and subsequently closed off during embryonic development. It is part of the neural ectoderm, which will develop into the membranous labyrinth of the inner ear. This labyrinth is a continuous
Body donation Body donation Body donation, anatomical donation, or body bequest is the donation of a whole body after death for research and education. Donated bodies are mostly used for medical education and research. They are used for gross anatomy, surgical anatomy and for furthering medical education. For years, only medical schools accepted bodies for donation, but now private programs also accept donors. Depending on the program's need for body donation, some programs accept donors with different specifications. Body donation is important for understanding the human body and for making advancements in science. There is usually no cost to donate a body