Otic vesicle constricts to form the canalis reuniens. The central part of the otic vesicle represents the membranous vestibule, and is subdivided by a constriction into a smaller ventral part, the saccule, and a larger dorsal and posterior part, the utricle. The dorsal component of the inner ear also consists of what will become the semicircular canals. The utricle and saccule communicate with each other by means of a Y-shaped canal. The FGF, Bmp, Wnt and Pax genes are likely to be involved in otic induction. FGF and BMP signals help control patterning in the early otic vesicle. Fgf3 and Fgf10 are
Sociopolitical issues of anatomy in America in the 19th century set up to teach people the natural and moral sciences of the human body, anatomy museums gradually declined in status with the progress of medical science and education. In postbellum America, the division between high and low medicine increased. The focus of public scientific education turned toward the structures and functions of plants, animals, and cells, and this was done through politically and socially approved public school curriculums and sanitary fairs. These other avenues not only appeared more legitimate, but also reduced the uniqueness of anatomy museums. Anatomy museums' popularity also suffered with the establishment of nonprofit art and natural