In the majority of cases, incontinence is caused by a weakening of the pelvic floor muscles that keep the urethra closed. Whenever they lose their elasticity, everyday activities such as laughing, coughing, lifting and running can cause a urine leak.
The respiratory system consists of a group of ducts that are capable of filtering air from the environment before entering the pulmonary system.
The Conducting System[edit] The functions of the conducting system are to transport, warm, humidify, and filter the air. These functions are facilitated by the various epithelia lining the passageways of the respiratory system.