<prompt> What is hyperplasiaDecrease in cell sizeIncrease in cell sizeIncrease in cell numberDecrease in cell number  <response>: Physiological adaptive responses include: Hypertrophy - increase in cell size Hyperplasia - increase in the number of cells Atrophy - decrease in cell size and number Metaplasia - reversible replacement of one cell type by another differentiated cell type Hyperplasia is common in cells capable of replication namely labile cells stable cells or stem cells 