The ureteric bud develops from ?

Development of kidneys - The definative human kidney arises from two distinct sources, 1). The secretory pa , I.e., excretory tubules or (nephrons) are derived from the lowest pa of the nephrogenic cord this pa is the metanephros, the cells of which form the metanephric blastema 2). The collecting pa of the kidney is derived from a diveiculum called the ureteric bud which arise from the lower pa of the mesonephric duct. Ref : Inderbir singh's Human Embryology, eleventh edition , pg. no., 265.