Bladder constitutes an important part of the lower urinary system and its main function is storage of the urine. Lower urinary system as well as central, peripheral and especially autonomic nervous system control have to be intact in order to maintain normal micturiton. Comprehensive knowledge about basic anatomy and physiology of micturiton is essential for better understanding and evaluation of  bladder dysfunction. Anatomy of the bladder and lower urinary system as well as normal physiology of micturiton is discussed in this article.