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 is composed of conducting and respiratory passages, which serve several functions. The primary function of this system is the exchange of oxygen and carbon dioxide; secondary functions are phonation and olfaction. The conducting portion of the respiratory system includes the nasal cavity, paranasal sinuses, nasopharynx, larynx, trachea, and bronchi. The conducting portion, from the nostrils to the lungs, warms, humidifies, and filters the air.