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 respiratory system consists of a conducting portion and a respiratory portion. The conducting portion provides a passageway for air and functions to condition the incoming air, by warming, moistening and cleaning it. It consists of the nasopharynx, larynx, trachea, bronchi, bronchioles and terminal bronchioles.