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.
- respiration-moving air to and from the exchange surfaces of the lungs-protecting respiratory surfaces from temperature changes, dehydration, and other environmental variations, and defending the system and other tissues from invasion by pathogens-producing sounds-facilitating and detection of olfactory stimuli.ilter, warm, humidify. passageways of the upper respiratory ________, _______, and ________ incoming air-protecting the more delicate surfaces of the lower respiratory system and cool and dehumidify outgoing air. î î î.