Compensatory growth (organ) kidneys. Along with the kidneys, compensatory growth has also been characterized in a number of other tissues and organs including: A large number of growth factors and hormones are involved with compensatory growth, but the exact mechanism is not fully understood and probably varies between different organs. Nevertheless, angiogenic growth factors which control the growth of blood vessels are particularly important because blood flow significantly determines the maximum growth of an organ. Compensatory growth may also refer to the accelerated growth following a period of slowed growth, particularly as a result of nutrient deprivation. Compensatory growth (organ) Compensatory growth is
Water organ Alexandria (c. 62 AD). Like the water clocks (clepsydra) of Plato's time, they were not regarded as playthings but might have had a particular significance in Greek philosophy, which made use of models and simulacra of this type. Hydraulically blown organ pipes were used to imitate birdsong, and musicologists Susi Jeans and Arthur W.J.G. Ord-Hume have suggested that it was used to create the sounds of the Vocal Memnon. For the latter, solar heat was used to syphon water from one closed tank into another, thereby producing compressed air for sounding the pipes. Characteristics of the hydraulis have been inferred