Indicate whether the following statements are true or false : (a) Micturition is carried out by a reflex.
Explanation The process of micturition is regulated by central nervous system (CNS) and muscles of bladder and urethra. The stretch response on the walls of the bladder send the signals to the CNS which passes on motor message to initiate the contraction of the smooth muscles of the bladder and simultaneous relaxation of the urethral sphincter causing the release of urine. The process of release of urine is called micturition and the neural mechanisms causing it is called micturition reflex. Final Answer Micturition is the process of voiding the bladder. The process is regulated by CNS and muscles of bladder and urethra. The mechanism by which it micturition facilitates is called micturition reflex. On an average an adult human excretes 1 to 1.5 litres of urine per day.