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 in ancient Greek is often imagined as an automatic organ, but there is no source evidence for it. A hydraulis is an early type of pipe organ that operated by converting the dynamic energy of water () into air pressure to drive the pipes (). Hence its name hydraulis, literally "water (driven) pipe (instrument)." It is attributed to the Hellenistic scientist Ctesibius of Alexandria, an engineer of the 3rd century BC. The hydraulis was the world's first keyboard instrument and was the predecessor of the modern church organ. Unlike the instrument of the Renaissance period, which is the main subject